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Quest Diagnostics Incorporated
1290 Wall Street West
Lyndhurst, New Jersey 07071
(201) 393-5000




                                                                          March 28, 2006


Dear Fellow Shareholder:
It is my pleasure to invite you to attend the 2006 Annual Meeting of Shareholders of
Quest Diagnostics Incorporated. The meeting will be held at 10:30 a.m. EDT on
Thursday, May 4, 2006, at The Waldorf-Astoria, 301 Park Avenue, New York, New York.
Attendance at the meeting will be limited to shareholders of record at the close of
business on March 20, 2006, or their duly appointed proxy holders (not to exceed one
proxy per shareholder). If you plan to attend the meeting, please review, “How can I
attend the annual meeting?’’ on page 3, for information about our admittance procedures.
At the meeting, you will vote on a number of important matters described in the attached
proxy statement.
Your vote is very important. Whether you plan to attend the meeting or not, I urge you to
vote your shares. Most shareholders have a choice of voting by signing and returning your
proxy card or by voting by telephone or the Internet. Instructions on how to vote are
included with your proxy card and these proxy materials.
Thank you for your continued support of Quest Diagnostics.



                                                     Sincerely,




                                                     Surya N. Mohapatra, Ph.D.
                                                     Chairman, President and
                                                     Chief Executive Officer
NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

                                                                                                             March 28, 2006

To the Shareholders of
Quest Diagnostics Incorporated:

Date: . . . . . . . . . . . . . . . . . . . . . . . . Thursday, May 4, 2006
Time: . . . . . . . . . . . . . . . . . . . . . . . . 10:30 a.m. EDT
Place: . . . . . . . . . . . . . . . . . . . . . . . . The Waldorf-Astoria
                                                       301 Park Avenue
                                                       New York, New York 10022
                                                 • Elect one class of directors for a three-year term;
Items of Business: . . . . . . . . . . . .
                                                 • Ratify the selection of our independent registered public accounting
                                                   firm for 2006;
                                                 • Act on a proposal to approve an amendment to our charter to increase
                                                   our authorized shares;
                                                 • Act on a proposal to approve an amended employee stock purchase
                                                   plan; and
                                                 • Consider any other business properly brought before the meeting.
Record Date: . . . . . . . . . . . . . . . . .   March 20, 2006. Holders of Quest Diagnostics common stock of record
                                                 at the close of business on that date are entitled to vote at the meeting.


                                                                       By order of the Board of Directors,



                                                                       Sirisha Gummaregula
                                                                       Corporate Secretary



                                 It is important that your shares be represented and voted
                                       whether or not you plan to attend the meeting.
                               YOU CAN VOTE BY PROXY IN ONE OF THREE WAYS:
    1.    VIA THE INTERNET:
          Visit www.cesvote.com.
    2.    BY PHONE:
          Call 1-888-693-8683.
    3.    BY MAIL:
          Promptly return your signed and dated proxy card/voting form in the enclosed postage
          pre-paid envelope.
Table of Contents
                                                                                                                                                                               Page

Information About Our 2006 Annual Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                1
Information About Shareholder Proposals and Nominations for Our 2007 Annual Meeting . . . . . . . . . .                                                                         4
Matters To Be Considered at the 2006 Annual Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                        5
    Proposal No. 1—Election of Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                             5
    Proposal No. 2—Ratification of PricewaterhouseCoopers LLP as the Company’s Independent
       Registered Public Accounting Firm for 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                    7
    Proposal No. 3—Approval of Amendment to Our Charter to Increase Our Authorized Shares . . .                                                                                  8
    Proposal No. 4—Approval of Amended Employee Stock Purchase Plan . . . . . . . . . . . . . . . . . . . . . . .                                                                9
Information About Our Corporate Governance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                             12
     Governance Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        12
     Independence of the Board of Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                          12
     Shareholder Access and Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                   12
     Board Nomination Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .               13
     Board Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   14
     Code of Business Ethics and Stock Ownership of Directors and Officers . . . . . . . . . . . . . . . . . . . . . .                                                          14
     Board Membership Changes During 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                15
     Other Board Membership Changes Since Date of Last Annual Meeting . . . . . . . . . . . . . . . . . . . . . . .                                                            15
     Board Committees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        15
     Audit and Finance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                   16
     Compensation Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              16
     Governance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            17
     Quality, Safety & Compliance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                              17
     Executive Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         18
     Lead Independent Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .             18
     Director Independence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         18
     Related Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        19
Stock Ownership Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              21
Directors’ Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        22
Additional Information Regarding Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                        24
    Summary Compensation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                     24
    Option/SAR Grants and Long-Term Incentive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                                 25
    Option Exercises and Fiscal Year-End Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                26
    Equity Compensation Plan Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                           26
    Pension Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    27
    Employment Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                28
    Severance Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .             30
Report of the Compensation Committee on Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                                   31
    Compensation Committee Interlocks and Insider Participation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                              34
    Performance Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .               35
    Section 16(a) Beneficial Ownership Reporting Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                             35
Report of the Audit and Finance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                            36
    Fees and Services of PricewaterhouseCoopers LLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                      37
    Audit and Finance Committee Pre-Approval Policies and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . .                                                       37

Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     38
Appendix A—Proposed Amendment to the Restated Certificate of Incorporation
Appendix B—Amended and Restated Employee Stock Purchase Plan
Appendix C—Charter of the Audit and Finance Committee
PROXY STATEMENT

                                 QUEST DIAGNOSTICS INCORPORATED
                                        1290 Wall Street West
                                    Lyndhurst, New Jersey 07071
                                           (201) 393-5000


INFORMATION ABOUT OUR 2006 ANNUAL MEETING
    This proxy statement and form of proxy and voting instructions are being mailed, starting March 31, 2006.


Who is soliciting my vote?
     The Board of Directors of Quest Diagnostics Incorporated, a Delaware corporation (“Quest Diagnostics,’’
the “Company,’’ “we’’ or “our’’) is soliciting your vote for our 2006 annual meeting.


What will I vote on?
    You are being asked to vote on:
    • the election of three directors for a three-year term;
    • the ratification of the selection of our independent registered public accounting firm for 2006;
    • a proposal to approve an amendment to our charter to increase our authorized shares; and
    • a proposal to approve an amended employee stock purchase plan.


What is the record date for the annual meeting?
      The close of business on March 20, 2006 is the record date for determining those shareholders who are
entitled to vote at the annual meeting and at any adjournment or postponement.


How many votes can be cast by all shareholders?
     Holders of our common stock, par value $0.01 per share, as of the close of business on the record date
will be entitled to vote at the annual meeting of shareholders. On that date, there were 198,250,639 shares of
our common stock outstanding, each of which is entitled to one vote for each matter to be voted on at the
annual meeting. There is no cumulative voting.


How many votes must be present to hold the annual meeting?
     A majority of the votes that may be cast, or 99,125,320 votes, present in person or represented by proxy,
is needed to hold the annual meeting. We urge you to vote by proxy even if you plan to attend the annual
meeting. That will help us to know as soon as possible that enough votes will be present to hold the annual
meeting.


How do I vote?
    You may vote at the annual meeting by proxy or in person.
    If you are a holder of record (that is, if your shares are registered in your own name with our transfer
agent), you may vote by mail using the enclosed proxy card, by telephone, on the Internet or by attending the
annual meeting and voting in person as described below.
    If you hold your shares in street name (that is, you hold your shares through a broker, bank or other
holder of record), please refer to the information on the voting instruction form forwarded to you by your bank,
broker or other holder of record to see which voting options are available to you.
Vote on the Internet
    You can choose to vote on the Internet by visiting www.cesvote.com. The directions for Internet voting are
on your proxy card or voting instruction form.

Vote by Mail
     If you choose to vote by mail, simply mark, sign and date your proxy card and return it in the enclosed
postage pre-paid envelope.

Vote by Telephone
    You can also vote by calling 1-888-693-8683.

Vote at the Annual Meeting
     If you want to vote in person at the annual meeting and you hold your shares in street name, you must
obtain an additional proxy from your broker, bank or other holder of record authorizing you to vote. You must
bring this proxy to the annual meeting.

How many votes will be required to elect a director or to adopt the proposals?
    • To elect directors to the Board, a plurality of the votes cast at the annual meeting is needed. A plurality
      means that the three nominees receiving the largest number of votes cast will be elected.
    • To ratify the selection of our independent registered public accounting firm, approve the amendment to
      our charter to increase our authorized shares, approve the amended employee stock purchase plan and
      any other matters properly raised at the annual meeting, a majority of the shares represented at the
      annual meeting and entitled to vote is needed.

Can I change or revoke my proxy?
    Yes, you may change your vote or revoke your proxy at any time before it is exercised. To do so, you
should:
    • send in a new proxy card with a later date;
    • send a written revocation to the Corporate Secretary;
    • cast a new vote by telephone or the Internet; or
    • attend the annual meeting and vote in person.
    Written revocations of a prior vote must be sent by mail to Sirisha Gummaregula, Corporate Secretary, at
Quest Diagnostics Incorporated, 1290 Wall Street West, Lyndhurst, New Jersey 07071. If you attend the annual
meeting and vote in person, your vote will revoke any previously submitted proxy.

What if I do not indicate my vote for one or more of the matters on my proxy card?
    If you return a signed proxy card without indicating your vote, your shares will be voted:
    • for the election of the three persons named under the caption “Election of Directors;’’
    • for the ratification of the selection of the independent registered public accounting firm;
    • for the approval of the amendment to our charter to increase our authorized shares; and
    • for the approval of the amended employee stock purchase plan.

What if I withhold my vote or I vote to abstain?
     In the election of directors, you can vote for the three directors named on the proxy card, or you can
indicate that you are withholding your vote from one or more of the directors. Withheld votes will not affect
the vote on the election of directors.

                                                         2
In connection with the proposals to ratify the selection of our independent registered public accounting
firm, approve the amendment to our charter to increase our authorized shares and approve the amended
employee stock purchase plan, you may vote for or against the proposals, or you may abstain from voting on
the proposals. Abstentions on the proposal to ratify the selection of our independent registered public accounting
firm, approve the amendment to our charter to increase our authorized shares or approve the amended employee
stock purchase plan will have the same effect as a vote against the proposals.

What happens if I do not vote?
    If you do not vote shares held in your name, those shares will not be voted.
     If your shares are held through a broker, your shares can be voted on the election of directors, the
ratification of the selection of our independent registered public accounting firm and the approval to amend our
charter to increase our authorized shares in your broker’s discretion.
    No broker may vote your shares on the proposal to approve the amended employee stock purchase plan
without your specific instructions.
     If your broker votes your shares on some, but not all, of the proposals, the votes will be “broker non-
votes’’ for any proposal on which they do not vote. Broker non-votes will have no effect on the election of
directors, the ratification of the selection of the independent registered public accounting firm, the proposal to
approve the amendment to our charter to increase our authorized shares, or the proposal to approve the
amended employee stock purchase plan.

What if there is voting on other matters?
     Our by-laws require prior notification of a shareholder’s intent to vote on other matters at the annual
meeting. The deadline has passed and we have not received any notifications. If other matters properly arise at
the annual meeting for consideration, the persons named in the proxy will have the discretion to vote on those
matters for you.

Will the Company’s independent registered public accounting firm be present at the annual meeting?
     Yes, representatives of PricewaterhouseCoopers LLP are expected to attend the annual meeting to answer
your questions and will have the opportunity to make a statement, if they desire to do so. The Audit and
Finance Committee of the Board of Directors of the Company has approved the appointment of
PricewaterhouseCoopers LLP as our independent registered public accounting firm for the 2006 fiscal year,
subject to ratification by shareholders.

Will the directors attend the annual meeting?
     Our policy is, where practical, to schedule the annual meeting of shareholders on a day on which we also
schedule a regular meeting of the Board. This year, we have scheduled a regular meeting of the Board on the
date of the annual meeting of shareholders. We encourage our directors to attend each annual meeting of
shareholders and expect that all of our directors will attend the annual meeting this year. All of our directors
attended the 2005 annual meeting of shareholders.

How can I attend the annual meeting?
     Only shareholders as of the record date, March 20, 2006 (or their proxy holders), may attend the annual
meeting. If you plan to attend the annual meeting or appoint someone to attend as your proxy, please check the
box on your proxy card, or, if you are voting by telephone or the Internet, follow the instructions provided to
indicate your plan to attend. You or your proxy holder will then need to show photo identification to pick up
your admittance card at the shareholders’ admittance desk at the annual meeting.
     If you do not inform us in advance that you plan to attend the annual meeting, you will need to bring
with you:
    • photo identification; and

                                                         3
• if you hold your shares in street name, proof of ownership of your shares as of the record date, such as
      a letter or account statement from your broker or bank.

What happens if the annual meeting is postponed or adjourned?
      Your proxy will still be valid and may be voted at the postponed or adjourned annual meeting. You will
still be able to change or revoke your proxy until it is voted.

Do any shareholders beneficially own more than 5% of our common stock?
     Yes. According to public filings, as of March 15, 2006, GlaxoSmithKline plc is the only holder known to
us to be the beneficial owner of more than 5% of our common stock. For further information, please see
“Stock Ownership Information’’ on page 21.

How can I review the list of shareholders eligible to vote?
     A list of shareholders as of the record date will be available for inspection and review upon request of any
shareholder to our Corporate Secretary at 1290 Wall Street West, Lyndhurst, New Jersey 07071. We will also
make the list available at the annual meeting.

Who will pay the expenses incurred in connection with the solicitation of my vote?
     The Company pays the cost of preparing proxy materials and soliciting your vote. Proxies may be solicited
on our behalf by our directors, officers or employees by telephone, electronic or facsimile transmission or in
person. We have hired Georgeson Shareholder Communications, Inc. to distribute and solicit proxies and we
will pay for their distribution and solicitation services an estimated fee of $12,000, plus expenses.

INFORMATION ABOUT SHAREHOLDER PROPOSALS AND NOMINATIONS FOR OUR 2007
ANNUAL MEETING

How do I submit a proposal for the 2007 annual meeting?
     If you want your proposal to be included in next year’s proxy statement, you should send it to the
Corporate Secretary at the Company’s principal executive offices at 1290 Wall Street West, Lyndhurst, New
Jersey 07071. We must receive your proposal by the close of business on December 1, 2006.
     If you want to present your proposal for consideration at the 2007 annual meeting, but do not meet the
deadline for inclusion in the proxy statement, our by-laws require that notice of your proposal be received by
the Corporate Secretary at the Company’s principal executive offices between January 1, 2007 and February 15,
2007 and conform to the requirements in our by-laws.

How do I nominate a candidate for director at the 2007 annual meeting?
     You must notify the Lead Independent Director by sending an e-mail to LeadIndependentDirector@quest
diagnostics.com or by writing to the Board of Directors or any independent board member c/o the Corporate
Secretary at the Company’s principal executive offices at 1290 Wall Street West, Lyndhurst, New Jersey 07071
of your nominations between January 1, 2007 and February 15, 2007. Your notice must also conform to the
requirements in our by-laws.




                                                        4
MATTERS TO BE CONSIDERED AT THE 2006 ANNUAL MEETING

Proposal No. 1     Election of Directors
     The Company’s Restated Certificate of Incorporation, as amended, requires the Company to have at
least three directors but not more than twelve directors. The number of directors is set by the Board of
Directors of the Company (the “Board of Directors’’ or the “Board’’). The Board presently consists of
eleven directors. The Board is divided into three classes with three-year terms. New directors elected by
the Board serve until the first annual meeting and are then assigned to a class for election by
shareholders. At this meeting, three directors are seeking election for a three-year term expiring in 2009.
Certain information as of March 15, 2006 concerning each of the nominees and continuing directors and
their business experience during the past five years is provided below.

Nominees for Election
     Each nominee is currently a director of the Company. Each nominee has consented to serve if
elected. The terms of these three directors seeking election expire at the adjournment of the 2006 annual
meeting.

Nominees for the Board with Terms Expiring at the 2009 Annual Meeting


                           Jenne K. Britell, Ph.D., 63, has been the Chairman and Chief Executive
                           Officer of Structured Ventures, Inc., a firm that advises domestic and foreign
                           companies on financial services and product strategy, since 2001. From 1996 to
                           2000, she was a senior officer of GE Capital, serving as President of GE
                           Capital Global Commercial & Mortgage Banking and Executive Vice President
                           of GE Capital Global Consumer Finance from 1999 to 2000 and serving as
                           President and Chief Executive Officer of GE Capital Central and Eastern
                           Europe from 1998 to 1999. Dr. Britell is a director of Aames Investment
                           Corporation, Crown Holdings, Inc., Lincoln National Corporation and West
                           Pharmaceutical Services, Inc. Dr. Britell has been a director of Quest
                           Diagnostics since August 2005.

                           Gail R. Wilensky, Ph.D., 62, is a Senior Fellow at Project HOPE, an
                           international non-profit health foundation, which she joined in 1993. From 1997
                           to 2001, she was the chair of the Medicare Payment Advisory Commission,
                           which advises Congress on all issues relating to Medicare. From 1995 to 1997
                           she chaired the Physician Payment Review Commission, which advised
                           Congress on physician payment and other Medicare issues. In 1992 and 1993,
                           Dr. Wilensky served as a deputy assistant to the President of the United States
                           for policy development relating to health and welfare issues. From 1990 to
                           1992, she was the administrator of the Health Care Financing Administration
                           where she directed the Medicare and Medicaid programs. Dr. Wilensky is a
                           director of Cephalon Inc., Gentiva Health Services, Inc., Manor Care Inc., SRA
                           International, Inc. and United Healthcare Corporation. Dr. Wilensky has been a
                           director of Quest Diagnostics since January 1997.




                                                      5
John B. Ziegler, 60, was the President, Worldwide Consumer Healthcare,
                       GlaxoSmithKline plc (the parent of SmithKline Beecham plc) from 1998 to
                       January 2006. Mr. Ziegler joined SmithKline Beecham in 1991 as the head of
                       SB Consumer Healthcare-North American Division. He became Executive Vice
                       President of SmithKline Beecham from 1996 to 1998. He has been a director
                       of Quest Diagnostics since May 2000. Mr. Ziegler has been recommended by
                       SmithKline Beecham for nomination as a director of Quest Diagnostics pursuant
                       to the Stockholders Agreement with SmithKline Beecham. See “Related
                       Transactions—Stockholders Agreement.’’

Directors Not Up for Election

Members of the Board Continuing in Office with Terms Expiring at the 2007 Annual Meeting

                       John C. Baldwin, M.D., 57, is the President and Chief Executive Officer of
                       CBR Institute for Biomedical Research. From 1998 to 2005, Dr. Baldwin was
                       the Associate Provost for Health Affairs at Dartmouth College and Professor of
                       Surgery at Dartmouth Medical School. From 1994 to 1998, Dr. Baldwin was
                       the head of the surgical programs at Baylor College of Medicine and its
                       affiliated hospitals. Dr. Baldwin was also the Governor of the American College
                       of Surgeons from 1991 through 1997 and the President of the International
                       Society of Cardiothoracic Surgeons in 1999. Dr. Baldwin has served as the
                       Vice-Chair of the Board of Overseers of Harvard University. Dr. Baldwin is a
                       director of Massey Energy Co. Dr. Baldwin has been a director of Quest
                       Diagnostics since May 2004.

                       William R. Grant, 81, is the Vice-Chairman of Galen Associates, a venture
                       capital firm, which he co-founded in 1989. From 1989 to February 2006, he
                       was the Chairman of Galen Associates. From 1987 to 1989, he was Chairman
                       of New York Life International and from 1979 to 1987, he was President and
                       Chairman of MacKay-Shields Financial Corp. He is also a former director and
                       Vice Chairman of SmithKline Beecham plc, and is currently a director of
                       Advanced Medical Optics, Inc. (non-executive Chairman), Massey Energy Co.,
                       and Vasogen Inc. Mr. Grant has been a director of Quest Diagnostics since
                       August 1999.

                       Surya N. Mohapatra, Ph.D., 56, is Chairman of the Board, President and
                       Chief Executive Officer of Quest Diagnostics. Prior to joining the Company in
                       February 1999 as Senior Vice President and Chief Operating Officer, he was
                       Senior Vice President of Picker International, a worldwide leader in advanced
                       medical imaging technologies, where he served in various executive positions
                       during his 18-year tenure. Dr. Mohapatra was appointed President and Chief
                       Operating Officer in June 1999, the Chief Executive Officer in May 2004, and
                       Chairman of the Board in December 2004. Dr. Mohapatra has been a director
                       of Quest Diagnostics since October 2002.




                                                6
Members of the Board Continuing in Office with Terms Expiring at the 2008 Annual Meeting

                          William F. Buehler, 66, retired in 2001 as Vice Chairman of Xerox
                          Corporation, which he joined in 1991. At Xerox, Mr. Buehler was responsible
                          for five business groups: Production Systems, Office Document Products,
                          Document Services, Channels and Supplies. He also oversaw Corporate
                          Strategic Services, Business Development and Systems Software and
                          Architecture. Prior to joining Xerox, Mr. Buehler spent 27 years with AT&T,
                          primarily in sales, marketing and general management positions. Mr. Buehler is
                          a director of A.O. Smith. Mr. Buehler has been a director of Quest Diagnostics
                          since July 1998.

                          Rosanne Haggerty, 45, is the founder and President of Common Ground
                          Community, a not-for-profit organization that develops strategies to end
                          homelessness in New York City. Prior to founding Common Ground
                          Community in 1990, she was the coordinator of housing development at
                          Brooklyn Catholic Charities. Ms. Haggerty is a 2001 MacArthur Foundation
                          Fellow. Ms. Haggerty has been a director of Quest Diagnostics since February
                          2002.



                          Gary M. Pfeiffer, 56, is the Senior Vice President and Chief Financial Officer
                          of E.I. du Pont de Nemours and Company. Mr. Pfeiffer joined DuPont in 1974,
                          where he has held positions of increasing responsibility in finance and
                          international operations, as well as in various DuPont divisions. Mr. Pfeiffer is
                          a director of Talbots, Inc. Mr. Pfeiffer has been a director of Quest Diagnostics
                          since December 2004.




                          Daniel C. Stanzione, Ph.D., 60, retired from Lucent Technologies
                          Incorporated in 2000 and is President Emeritus of Bell Laboratories.
                          Dr. Stanzione began his career in 1972 with Bell Laboratories, where he led
                          the teams working on the first microprocessors and digital signal processors. He
                          was appointed president of Network Systems, Lucent’s largest business unit, in
                          1996 and was appointed Chief Operating Officer of Lucent in 1997.
                          Dr. Stanzione is a director of InterNAP Network Services Corporation.
                          Dr. Stanzione has been a director of Quest Diagnostics since January 1997.


THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THE
ELECTION OF EACH NOMINEE FOR DIRECTOR.

Proposal No. 2     Ratification of PricewaterhouseCoopers LLP as the Company’s
                   Independent Registered Public Accounting Firm for 2006
    The Audit and Finance Committee has approved the selection of PricewaterhouseCoopers LLP
(“PWC’’) to serve as our independent registered public accounting firm for 2006.
     Our by-laws do not require that our shareholders ratify the selection of PWC as the independent
registered public accounting firm. The Audit and Finance Committee will consider the outcome of this
vote in its decision to appoint an independent registered public accounting firm next year, but is not
bound by the shareholders’ vote. Even if the selection of PWC is ratified, the Audit and Finance


                                                    7
Committee may change the appointment at any time during the year if it determines that a change would
be in the best interest of the Company and its shareholders.
    Representatives of PWC are expected to be present at the annual meeting, will have the opportunity
to make a statement if they desire to do so and will be available to respond to appropriate questions.
     For information concerning the selection of PWC, see “Report of the Audit and Finance Committee’’
on page 36. For information concerning fees paid to PWC, see “Fees and Services of
PricewaterhouseCoopers LLP’’ on page 37.
THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THE
RATIFICATION OF PRICEWATERHOUSECOOPERS LLP AS OUR INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM FOR 2006.

Proposal No. 3     Approval of Amendment to Our Charter to Increase Our Authorized Shares
     On February 16, 2006, your Board unanimously declared advisable an amendment to Quest
Diagnostics’ Restated Certificate of Incorporation to provide for an increase in the number of shares of
common stock, par value $0.01 per share, included in the authorized capital of the Company, from
300,000,000 shares to 600,000,000 shares, subject to the approval of the amendment by the shareholders
at the 2006 Annual Meeting of Shareholders. The proposed amendment would not change the number of
shares of preferred stock of the Company that is currently authorized (10,000,000 preferred shares). The
text of this proposed amendment is included in the Certificate of Amendment attached as Appendix A to
this Proxy Statement.
    Overview. Quest Diagnostics is required by Delaware law to obtain shareholder approval for any
    amendment to our Restated Certificate of Incorporation. After considering Quest Diagnostics’ current
    number of issued and outstanding shares of common stock, our current outstanding equity obligations
    and various other factors discussed in “Reasons for Proposal’’ below, your Board of Directors has
    determined that it is necessary to increase the number of shares of common stock authorized for
    issuance from 300,000,000 shares to 600,000,000 shares. If approved by our shareholders, the increase
    in authorized capital would become effective by filing the Certificate of Amendment with the
    Secretary of State of the State of Delaware, which we plan to do as soon as reasonably practicable
    after the 2006 Annual Meeting of Shareholders.
    Reasons for Proposal. Your Board believes that the proposed amendment will restore the flexibility
    for issuances of equity that was available to the Board prior to the stock split effected on June 20,
    2005, thus maintaining the Company’s ability to respond to various corporate opportunities which may
    arise in the future while continuing to have enough shares in reserve to satisfy current obligations.
    Following the 2:1 stock split effected on June 20, 2005, the Company had 198,250,639 shares of
    common stock issued and outstanding as of March 20, 2006. The unissued shares would be available
    for issuance from time to time for various corporate purposes, including stock splits, stock dividends,
    employee benefit and compensation plans, acquisitions and public or private sales for cash as a means
    of raising capital. The increase in authorized capital would mean that the additional authorized shares
    would be available for issuance from time to time at the discretion of your Board without further
    shareholder action except as may be required for a particular transaction by law, the policies of the
    New York Stock Exchange or any contractual obligations of the Company that may be in effect at
    the time of issuance which will in many cases avoid any potential expense or delay in connection
    with obtaining shareholder approval for a particular issuance of shares.
    Principal Effects on Rights of Current Shareholders. The terms of the additional shares of common
    stock will be identical to those of the currently outstanding shares of common stock. However, the
    proposal to increase the authorized capital of the Company may affect the rights of existing holders
    of common stock to the extent that future issuances of common stock reduce each existing
    shareholder’s proportionate ownership and voting rights in the Company. In addition, possible dilution
    caused by future issuances of common stock could lead to a decrease in Quest Diagnostics’ net
    income per share in future periods and a resulting decline in the market price of Quest Diagnostics’
    common stock. Shareholders of the Company have no preemptive rights with respect to common
    stock. Thus, should the Board of Directors elect to issue additional shares with respect to common


                                                    8
stock, existing shareholders would not have any preferential rights to purchase such shares. Although
    an increase in the number of authorized shares of common stock could, under certain circumstances,
    be construed as having an anti-takeover effect (for example, by diluting the stock ownership of a
    person seeking to effect a change in the composition of the Board of Directors or contemplating a
    tender offer or other transaction for the combination of the Company with another company), the
    Company is not proposing this amendment to the Restated Certificate of Incorporation in response to
    any effort to accumulate the Company’s stock or to obtain control of the Company by means of a
    merger, tender offer, or solicitation in opposition to management. It is not anticipated that adoption of
    the amendment would have any other effect on the holders of Quest Diagnostics’ common stock.
THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THIS
PROPOSAL.

Proposal No. 4      Approval of Amended Employee Stock Purchase Plan
     On February 16, 2006, upon the recommendation of our Compensation Committee, our Board of
Directors unanimously approved the Amended and Restated Employee Stock Purchase Plan (the
“Program’’), subject to approval by our shareholders at the 2006 Annual Meeting of Shareholders. The
Program is an amendment and restatement of the Company’s Employee Stock Purchase Plan, which has
been in effect since January 1, 1997 and was most recently approved by the Board of Directors in 2005,
and is now being presented for approval by our shareholders. The Program will be applicable only to
shares purchased and transferred on or after the date it is approved by the shareholders (the “Program
Effective Date’’). We believe that the Program encourages and assists our employees to acquire shares of
our common stock thereby better aligning their interests with other shareholders, helps provide for future
financial security of our employees and fosters good employee relationships. Therefore, combined with the
other benefits that we provide to our employees, we believe that the Program is helpful in attracting,
retaining and motivating employees.
     A general description of the principal features of the Program is set forth below, but this description
is qualified in its entirety by reference to the full text of the Program attached hereto as Appendix B.
    Purpose. The purpose of the Program is to provide eligible employees with an opportunity to
    increase their proprietary interest in the success of the Company by purchasing common stock from
    the Company on favorable terms and paying for such purchases through periodic payroll deductions.
    Administration. The Program is administered by a committee appointed by the Board of Directors,
    consisting of at least three employees of the Company (the “Committee’’).
    Eligibility. Any person who is employed by the Company (or by a subsidiary or other entity
    designated by the Committee) and is regularly scheduled to work for at least 20 hours per week is
    eligible to participate in the Program. No employee can participate in the Program if the employee
    would, immediately after participating in the Program, own stock of the Company possessing five
    percent or more of the total combined voting power or value of all classes of stock of the Company
    or of its parent or subsidiary companies. Non-employee directors are not eligible to participate in the
    Program. As of December 31, 2005, approximately 36,000 employees were eligible to participate in
    the Program.
    Shares Subject to the Program. The shares subject to the Program are shares of Quest Diagnostics
    Incorporated common stock, par value $0.01 per share. 5,000,000 shares have been reserved for
    issuance under the Program after the Program Effective Date. The market value of the 5,000,000
    shares reserved for issuance under the Program, as of March 15, 2006, was $261,150,000.
    Adjustments. The Program allows the Board to make proportionate adjustments to the number of
    shares approved for the Program in connection with any increase or decrease in the number of issued
    shares of the Company’s common stock resulting from a stock split, reverse stock split, stock
    dividend, combination or reclassification of the Company’s common stock, or any other change
    affecting the Company’s common stock, as the Board determines may be required to preserve the
    benefits or potential benefits intended under the Program.




                                                      9
Except for the adjustments described above, no issuance by the Company of shares of stock of any
class or securities convertible into shares of stock or any class will affect, and no adjustment will be
made by reason of such issuance to, the number or price of shares that are subject to the Program.
Offering Period. On the last business day of each calendar month or such other period as the
Committee may determine (the “Offering Period’’), the Company will make an offering to eligible
employees to purchase shares under the Program.
Participation in the Program. An employee eligible to participate in the Program on the first day of
any Offering Period may participate in the offering for that Offering Period by completing and
forwarding by a date, selected by the Committee, prior to that Offering Period a payroll deduction
authorization form to the employee’s appropriate payroll location. The payroll deduction may not
exceed the greater of 10% of the base salary the employee receives during the Offering Period and
such lesser amount as is determined by the Committee. During the Offering Period, the Company
will be deemed to make a matching contribution of an additional amount to the employee’s payroll
deduction account equal to 0.1765 multiplied by the amount of the payroll deduction authorized by
the employee.
Payroll deductions made during an Offering Period may not be withdrawn from the employee’s
payroll deduction account except if required in connection with the suspension or amendment of the
Program or, subject to the approval of the Committee, in the event of an employee’s death and upon
the request of his estate.
Purchase of Shares. Each employee participating in any offering under the Program will be granted
an option to purchase, upon the effective date of such offering, as many shares as may be purchased
with the funds in the employee’s payroll deduction account.
The price for each share will be the per share market price of the Company’s common stock on the
last business day of any Offering Period. The account of each participating employee will be totaled
and the funds in the employee’s account, including the additional amounts deemed to be contributed
by the Company as of that date, will be used to purchase shares. The employee will be deemed to
have exercised an option to purchase such shares at the market price and the employee’s account will
be charged for the amount of the purchase. The “market price’’ of shares for this purpose means the
closing price of shares of the Company’s common stock on a given day as reported in the Wall
Street Journal or, if no sales of the Company’s common stock were made on that day, the closing
price of such shares on the next preceding day on which sales were made.
To the extent an employee is deemed to have exercised an option to purchase fractional shares under
the Program, the value of the fractional shares will be paid to the employee in cash at the same time
he or she is delivered certificates for whole shares purchased during the Offering Period.
Amendments. The Board of Directors (or any officer of the Company to whom it delegates such
authority) may at any time, or from time to time, amend or suspend the Program in any respect,
including retroactively to the extent necessary, except that no such action will be made without
shareholder approval if such approval is required under tax or stock exchange rules and regulations.
Termination. The Program and all rights of employees under any offering will terminate on the
earlier of the day that participating employees become entitled to purchase a number of shares greater
than the number of shares remaining available under the Program and at any earlier time, at the
discretion of the Board of Directors. However, no offering under the Program shall be made which
shall extend beyond the tenth anniversary of the Program Effective Date.
Federal Income Tax Consequences. The following is a general summary of the federal income tax
consequences related to participation in the Program. It is not intended to provide or supplement tax
advice to employees. Employees should consult their own tax advisor to determine the actual federal,
state, local and/or foreign tax consequences to them and the effect, if any, of gift, estate and
inheritance taxes of participating in the Program in light of their particular circumstances.
An employee will have already recognized taxable income, and the Company generally is entitled to
a deduction, for compensation paid to him or her and subsequently used to purchase common stock
under the Program. Additionally, an employee will recognize taxable income pursuant to the Program


                                                 10
in respect of common stock purchased with the additional contribution made by the Company to the
       account. The amount of income the employee recognizes will be equal to the fair market value of the
       common stock purchased with such additional contribution at the end of the Offering Period. This
       amount, together with the amount initially deducted by the employee from his or her compensation,
       will be the employee’s tax basis for the common stock purchased under the Program. The holding
       period begins on that day for purposes of determining whether the employee has long-term or
       short-term capital gain or loss on a subsequent sale of common stock. The Company generally will
       be entitled to a deduction with respect to the taxable income recognized by the employee in respect
       of the additional contribution made by the Company.

Summary of Benefits
     It is not possible to determine the number of shares that will be purchased under the Program in the
future by any particular individual. The table below shows the number of shares purchased from Company
contributions during 2005 under the Program.

                                                                         New Plan Benefits
                                                                                                                            Employee Stock Purchase Plan
                                                                                                                      Dollar Value($)(1)   Number of Shares(2)
                                             Name and Position

Surya N. Mohapatra
  Chairman, President and Chief Executive Officer . . . . . . . . . . . . . . . . .                                                   0                     0
Robert A. Hagemann
  Senior Vice President and Chief Financial Officer . . . . . . . . . . . . . . . .                                              5,030                    100
David M. Zewe
  Senior Vice President, Diagnostic Testing Operations . . . . . . . . . . . . .                                                  689                     14
Michael E. Prevoznik
  Senior Vice President and General Counsel . . . . . . . . . . . . . . . . . . . . . .                                           918                     18
Robert E. Peters
  Vice President, Sales and Marketing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                               1,147                    23
Executive Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .           7,784                   155
Non-Executive Director Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                Not applicable        Not applicable
Non-Executive Officer Employee Group . . . . . . . . . . . . . . . . . . . . . . . . . . . .                               3,098,755                61,790
(1) The amounts in this column represent the matching contributions made by the Company with respect to 2005 payroll deductions
    (representing 17.65% of the applicable employee contribution).
(2) The amounts in this column represent the number of shares purchased or contributed by the Company attributable to matching
    contributions made by the Company with respect to 2005 payroll deductions, after giving effect to the stock split on June 20,
    2005. The amounts do not include the number of shares purchased or contributed by the Company attributable to employee con-
    tributions with respect to 2005 payroll deductions, which aggregated 0 shares for Dr. Mohapatra; 567 shares for Mr. Hagemann;
    78 shares for Mr. Zewe; 104 shares for Mr. Prevoznik; 130 shares for Mr. Peters; 879 shares for the executive group and 349,978
    shares for the non-executive officer employee group.

THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THIS
PROPOSAL.




                                                                                       11
INFORMATION ABOUT OUR CORPORATE GOVERNANCE
Governance Practices
     The Board of Directors believes that good corporate governance is critical to achieve business
success. The Board has adopted a set of Corporate Governance Guidelines to enhance its own
effectiveness and to implement best practices for the Company’s corporate governance. These principles are
reviewed from time to time for possible revision to respond to changing regulatory requirements, evolving
best practices and the concerns of our shareholders. Our Corporate Governance Guidelines are published
on our website at www.questdiagnostics.com. Highlights of our corporate governance practices are
described below.

Independence of the Board of Directors
• A substantial majority of the Board were independent directors during 2005 (8 of 11 members) and will
  be independent directors following the 2006 Annual Meeting of Shareholders (9 of 10 members), as
  defined under the New York Stock Exchange listing standards. See “Director Independence’’ on page 18
  for further information regarding the independence of the directors.
• The Audit and Finance Committee, Compensation Committee, Governance Committee and Quality,
  Safety & Compliance Committee are composed solely of independent directors.
• Each standing committee, other than the Executive Committee, is chaired by an independent director.
• None of the independent directors receives any consulting or other non-director fees from the Company.

Shareholder Access and Rights
• Shareholders are asked to ratify the selection of the independent registered public accounting firm at our
  annual meeting.
• All equity compensation plans, other than our Employee Stock Purchase Plan, have been approved by
  shareholders. Our Employee Stock Purchase Plan is proposed for approval by shareholders at the 2006
  Annual Meeting of Shareholders. See “Proposal No. 4—Approval of Amended Employee Stock
  Purchase Plan’’ on page 9 for a description of the Employee Stock Purchase Plan.
• The Company provides a process for shareholders to send communications to the Board of Directors.
  Shareholders may communicate directly with the full Board or any of the independent Board members
  by sending an email to our Lead Independent Director at LeadIndependentDirector@questdiagnostics.com
  or writing to the full Board or any independent Board member c/o Corporate Secretary, 1290 Wall
  Street West, Lyndhurst, New Jersey 07071. Communications received at the email address are
  automatically routed to the Company’s Lead Independent Director with a copy to the Company’s
  General Counsel and Corporate Secretary. The Lead Independent Director determines whether any such
  communication received from a shareholder should be distributed to other members of the Board. All
  communications received by the Corporate Secretary addressed to any director and that involves the
  interest of the Company or its shareholders, other than solicitations, are forwarded to the intended
  directors.
• The Audit and Finance Committee and the Board of Directors have established a procedure whereby
  complaints and concerns with respect to accounting, internal controls and auditing matters may be
  submitted to the Audit and Finance Committee. All communications received by a director from a
  shareholder relating to the Company’s accounting, internal controls or auditing matters are immediately
  forwarded to the Chairman of the Audit and Finance Committee and are investigated and responded to
  in accordance with the procedures established by the Audit and Finance Committee. In addition, the
  Company has established a hotline (known as CHEQline) pursuant to which employees can
  anonymously report accounting, internal controls and financial irregularities (as well as compliance
  concerns on other laws).
• Our policy is, where practical, to schedule the annual meeting of shareholders on a day on which we
  also schedule a regular meeting of the Board. This year, we have scheduled a regular meeting of the
  Board on the date of the annual meeting of shareholders. We encourage our directors to attend each

                                                    12
annual meeting of shareholders and expect that all of our directors will attend the annual meeting this
  year. All of our directors attended the 2005 annual meeting of shareholders.

Board Nomination Process
• The Governance Committee is responsible for reviewing with the Board, on an annual basis, the
  composition of the Board as a whole and whether the Company is being well served by the directors
  taking into account each director’s independence, skills, experience, availability for service to the
  Company and other factors the Governance Committee deems appropriate. The Governance Committee
  is responsible for recommending director nominees to the Board, including renomination of persons who
  are already directors. The Governance Committee does not set specific, minimum qualifications that
  nominees must meet in order for the Governance Committee to recommend them to the Board, but
  rather believes that each nominee should be evaluated based on his or her own merits, taking into
  account the needs of Quest Diagnostics and the composition of the Board. Recommendations are made
  by the Governance Committee in accordance with the policies and principles of its charter and taking
  into account the following key qualifications and factors established by the Governance Committee and
  the Board:
            Qualifications:
                Reputation for highest ethical standards and integrity consistent with Quest Diagnostics’
                values of Quality, Integrity, Innovation, Accountability, Collaboration and Leadership; and
                Relevant experience such as:
                  • Chief Executive Officer or Chief Operating Officer (or similar responsibilities) current
                    or past; or
                  • Demonstrated expertise in business function(s) such as sales, operations, finance,
                    strategy, legal or human resources; or
                  • Medical practitioners and/or science and health thought leaders.
            Other factors considered by the Governance Committee and the Board are the following:
                At least a majority of the directors meet the criteria for independence under the New
                York Stock Exchange listing standards and any categorical standards established by the
                Board.
                Prior experience as a director or executive officer of a public company.
                Number of current board positions and other time commitments.
                Overall range of skills, experience and seniority represented by the Board as a whole.
• The Governance Committee considers suggestions from many sources, including shareholders, regarding
  possible candidates for director. Shareholders may recommend candidates for consideration as director to
  the Governance Committee by sending an email to our Lead Independent Director or writing to the
  Board at the address specified under “Information About Our Corporate Governance—Shareholder
  Access and Rights’’. See “Information About Shareholder Proposals and Nominations for our 2007
  Annual Meeting’’ for the deadlines and process by which you may submit director nominees for
  consideration by the Governance Committee for the 2007 annual meeting of shareholders. The notice
  should contain the proposed nominee’s full name, biographical information regarding the proposed
  nominee and the proposed nominee’s relationship to the shareholder and should be submitted in
  compliance with our by-laws. The Governance Committee expects to consider qualified shareholder
  nominees for director in the same manner as recommendations it receives from any other source.
• The process of nominating directors is as follows. First, the Governance Committee identifies a need to
  add a new Board member who meets specific criteria or to fill a vacancy on the Board. The
  Governance Committee then identifies candidates by seeking input from Board members and considering
  recommendations for nominees submitted by shareholders. The Governance Committee also hires third-
  party search firms to assist in identifying and evaluating candidates for nomination and considers any
  nominees recommended by shareholders. After the Governance Committee ranks the candidates, the
  Chairman of the Board and the Chief Executive Officer interviews the candidates selected by the

                                                    13
Governance Committee. The Lead Independent Director (who is the Chair of the Governance
  Committee) and other Board members conduct subsequent interviews of these candidates. After the
  interview process, the Governance Committee re-assesses the candidates and determines which
  candidates the Governance Committee will recommend to the Board for nomination as a director. The
  Governance Committee then makes its recommendation to the entire Board, which determines which
  candidates are nominated by the Board of Directors or elected to fill a vacancy. A formal offer is then
  extended by the Chairman of the Board and the Lead Independent Director to the candidate(s)
  nominated or elected to fill a vacancy by the Board of Directors.

Board Practices
• Non-management directors meet privately in executive sessions at all regularly scheduled meetings with
  the Lead Independent Director presiding. Independent directors meet privately in executive sessions at
  least once per year with the Lead Independent Director presiding.
• The Board performs an annual assessment of its structure and performance, including reviewing the
  Board’s activities against those set out in its Corporate Governance Guidelines and committee charters
  and making recommendations for changes or improvements in practices or structure.
• The Board reviews annually senior management succession planning and reviews Company policies for
  the development of management personnel.
• Independent directors have unlimited access to officers and employees of the Company.
• Director training sessions are scheduled regularly with senior management, our independent registered
  public accounting firm and compensation consultants to keep the Board updated on changes in the
  Company’s businesses, its markets and best practices in general. Directors are also offered the
  opportunity to attend director education programs offered by third parties.
• Independent directors receive a significant portion of their annual compensation in equity to further
  align our directors with the interest of our shareholders.
• Independent directors have unlimited access to independent legal, financial or other advisors as they may
  deem necessary, without obtaining management approval.
• The Governance Committee reviews incumbent directors prior to recommending the slate for election.
  The review emphasizes directors’ commitment to serving the Company, attendance at meetings and
  commitment to shareholders, employees and other constituencies served by the Company.
• Committee chairs and members are rotated from time to time to give the directors a broader knowledge
  of the Company’s affairs.
• Committees report on their activities to the Board at each Board meeting.
• Materials related to agenda items are provided to directors sufficiently in advance of meetings to allow
  the directors to prepare for discussion of the items.

Code of Business Ethics and Stock Ownership of Directors and Officers
• The Company has adopted a Code of Business Ethics (the “Code’’) applicable to all directors, officers
  and employees. The Code is posted on the Investor Relations—Corporate Governance section of our
  website at www.questdiagnostics.com. Any waivers from any provisions of the Code for executive
  officers, senior financial officers and directors will be promptly disclosed to shareholders. In addition,
  any amendments to the Code, as well as any waivers from certain provisions of the Code relating to
  our Chief Executive Officer and senior financial officers will be posted at the above website address.
• The Board’s stock ownership guidelines require each non-management director to own at least 6,000
  shares of common stock of the Company before they can receive full cash settlement for their stock
  option exercises.
• The Company’s stock ownership guidelines require officers to maintain a minimum ownership position
  in the Company stock before they can receive full cash settlement for their stock option exercises. See
  “Report of the Compensation Committee on Executive Compensation’’ on page 31.
• Stock ownership information of directors and executive officers is shown in the table entitled “Stock
  Ownership Information’’ on page 21.

                                                    14
Board Membership Changes During 2005

         Dr. Jenne K. Britell was elected to the Board on August 6, 2005.


Other Board Membership Changes Since Date of Last Annual Meeting

     On February 16, 2006, during a regularly scheduled Board meeting, Mr. James F. Flaherty III, a
current director of the Company, notified the Board that he declines to be considered as a candidate for
re-election as a director of the Company at the 2006 Annual Meeting of Shareholders. Mr. Flaherty’s term
as a director will expire on the date of the 2006 Annual Meeting of Shareholders after three years of
service to the Company. Mr. Flaherty’s decision was not the result of any disagreement with the Company.


Board Committees

     In order to fulfill its responsibilities, the Board has delegated certain authority to its committees.
There are five standing committees. During 2005, the Board held nine regular meetings. Each of our
directors attended at least 75% of the total number of meetings of the Board of Directors and the
committees on which he or she served. Any of our directors may attend meetings of any committee in
which such director is not a member. Mr. Flaherty and Mr. Grant attended the meetings of the Audit and
Finance Committee in 2005 as guests. The following table shows the membership of, and the number of
meetings held by, each of the committees during 2005.
                                                                                                                          Quality
                                                                                Audit and                                Safety &
                                Directors                                        Finance    Compensation   Governance   Compliance   Executive

John C. Baldwin, M.D . . . . . . . . . . . . . . . . . . . . . . . . .               X                                      X
Jenne K. Britell, Ph.D.(1) . . . . . . . . . . . . . . . . . . . . . . .             X
William F. Buehler . . . . . . . . . . . . . . . . . . . . . . . . . . . .                       X*            X
James F. Flaherty III(2) . . . . . . . . . . . . . . . . . . . . . . . . .           X*                        X                        X
William R. Grant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rosanne Haggerty . . . . . . . . . . . . . . . . . . . . . . . . . . . . .           X                                      X
Surya N. Mohapatra, Ph.D . . . . . . . . . . . . . . . . . . . . .                                                                      X*
Gary M. Pfeiffer(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        X*          X             X                        X
Daniel C. Stanzione, Ph.D . . . . . . . . . . . . . . . . . . . . .                  X           X             X*                       X
Gail R. Wilensky, Ph.D . . . . . . . . . . . . . . . . . . . . . . . .                                         X            X*
John B. Ziegler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                    X                          X
Number of Meetings . . . . . . . . . . . . . . . . . . . . . . . . . .             13            8             3            4            0
* Chair of the committee.

(1)   Dr. Britell was elected to the Board on August 6, 2005.

(2)   Mr. Flaherty ceased to be the chair of the Audit and Finance Committee and a member of the Governance Committee and the
      Executive Committee following the 2005 annual meeting of shareholders on May 10, 2005. Thereafter, Mr. Flaherty attended the
      meetings of the Audit and Finance Committee as a guest.

(3)   Mr. Pfeiffer became the chair of the Audit and Finance Committee and a member of the Governance Committee, the Compensation
      Committee and the Executive Committee following the 2005 annual meeting of shareholders on May 10, 2005.


     A brief description of each of the Board committees and their functions is set forth below. Additional
information about the committees can be found in the committee charters, which are available on the
Investor Relations—Corporate Governance section of our website at www.questdiagnostics.com. Printed
copies of these charters, the Corporate Governance Guidelines or the Code may be obtained without
charge by writing to the Corporate Secretary. The charter for the Audit and Finance Committee is also
attached hereto as Appendix C.

                                                                                15
Audit and Finance Committee
    The Audit and Finance Committee:
    • Assists the Board in monitoring the quality and integrity of the financial statements of the
      Company and financial reporting procedures and the Company’s compliance with legal and
      regulatory requirements.
    • Oversees management’s accounting for the Company’s financial results and reviews the timeliness
      and adequacy of the reporting of those results and related judgments.
    • Oversees the internal audit function and makes inquiry into the audits of the Company’s books
      made internally and by outside independent registered public accounting firms.
    • Assists the Board in monitoring the independent registered public accounting firm’s qualifications
      and independence and appoints and replaces the independent registered public accounting firm,
      oversees the independent registered public accounting firm and is responsible for the compensation
      of the independent registered public accounting firm.
    • Pre-approves services to be performed by the independent registered public accounting firm.
    • Reviews with the Company’s independent registered public accounting firm and informs the Board
      of any significant accounting matters, including critical accounting policies and judgments.
    • Advises and makes recommendations with regard to certain financing transactions and other
      significant financial policies and actions.
    • Establishes procedures for the receipt, retention and treatment of complaints relating to accounting,
      internal accounting controls, and for the confidential, anonymous submission by employees of
      concerns regarding accounting or auditing matters.
    • May, to the extent it deems necessary or appropriate, retain independent legal, accounting or other
      advisors.
    • Reviews and reports to the Board on the Company’s management of its financial resources.
    • Reviews the performance of the Audit and Finance Committee.
     Each member of our Audit and Finance Committee is independent under the rules of the Securities
and Exchange Commission (“SEC’’) and the New York Stock Exchange listing standards. Each of Jenne
K. Britell and Gary M. Pfeiffer qualifies as an “audit committee financial expert’’ as defined by the SEC.
Each member of our Audit and Finance Committee is “financially literate’’ as required by the New York
Stock Exchange listing standards. For descriptions of the experience of Dr. Britell and Mr. Pfeiffer, see
“Election of Directors’’ on pages 5 and 7.

Compensation Committee
    The Compensation Committee:
    • Reports to the Board with respect to the performance of the Chief Executive Officer and reviews
      and approves the compensation of the Chief Executive Officer based on the directors’ evaluation of
      the Chief Executive Officer and the Company’s financial performance, shareholder return,
      competitive compensation data and other factors.
    • Approves the compensation of the other executive officers and oversees the performance of other
      executive officers.
    • Annually reviews and approves for other executive officers of the Company annual base salary,
      annual incentive compensation, and long-term incentive compensation.
    • Has the authority to retain and terminate consultants to assist in the evaluation and compensation
      of directors, the Chief Executive Officer and elected officers; and has the authority to approve the
      fees and other retention terms of such consultants.
    • Reviews and recommends to the Board the compensation of Company directors.
    • Supports the Board in the senior management succession planning process.

                                                    16
• Recommends to the Board the equity based, incentive compensation and retirement plans, policies
      and programs of the Company.
    • Reviews and approves employment agreements, severance agreements and change in control
      agreements, and any additional special or supplemental benefits for executive officers, and with
      respect to the Chief Executive Officer, makes recommendations to the Board for approval by the
      Board.
    • Administers the equity-based and incentive compensation plans of the Company.
    • Reviews the performance of the Compensation Committee.
      Each member of our Compensation Committee is independent under the New York Stock Exchange
listing standards.

Governance Committee
    The Governance Committee:
    • Actively seeks individuals qualified to become Board members, and reviews and recommends
      possible candidates for Board membership, taking into account such criteria as independence,
      diversity, age, skills, occupation and experience in the context of the needs of the Board.
    • Reviews the structure of the Board, its committee structure and overall size.
    • Advises the Board regarding significant developments in corporate governance matters.
    • Reviews the Company’s Corporate Governance Guidelines periodically and advises the Board of the
      Company’s compliance with its Corporate Governance Guidelines and applicable laws and
      regulations.
    • Recommends for Board approval assignments of Board members to committees.
    • Reviews relationships and transactions of directors, executive officers and senior financial officers
      for possible conflicts of interest.
    • Monitors compliance with the Company’s Code of Business Ethics.
    • Determines a schedule for regular executive sessions of the Board in which non-management
      directors meet without management participation.
    • Oversees and assesses the processes by which management provides information to the Board, as
      well as the quality and timeliness of the information received.
    • Leads the Board and each committee of the Board in its annual performance self-evaluation.
    • Reviews the performance of the Governance Committee.
      Each member of our Governance Committee is independent under the New York Stock Exchange
listing standards.

Quality, Safety & Compliance Committee
    The Quality, Safety & Compliance Committee:
    • Reviews the Company’s policies, programs and performance relating to billing compliance,
      environmental health and safety, equal opportunity employment practices, fraud and abuse, and
      medical quality assurance to insure continuous improvement and compliance with applicable rules
      and regulations.
    • Reviews legal matters pertinent to the Company and the Company’s compliance with its legal and
      regulatory obligations.
    • Reviews and recommends to the Board action with respect to significant external and internal
      investigations as they relate to possible violations of law by the Company or its directors, officers,
      employees or agents.
    • Monitors and reports to the Board status of significant regulatory, legislative and legal developments
      affecting the business of the Company.

                                                    17
• Reports to the Audit and Finance Committee regarding material legal matters and compliance with
      legal and regulatory requirements.
    • Reviews the performance of the Quality, Safety & Compliance Committee.
    Each member of our Quality, Safety & Compliance Committee is independent under the New York
Stock Exchange listing standards.

Executive Committee
    The Executive Committee:
    • Acts for the Board when Board action is required except with respect to certain major corporate
      matters, such as mergers, election of directors, removal of directors or the Chief Executive Officer,
      amendment of the Company’s charter or by-laws, declaration of dividends and such matters as are
      delegated to other committees of the Board.

Lead Independent Director
    The Board of Directors has elected Daniel C. Stanzione, Ph.D., as the Lead Independent Director.
The principal responsibilities of the Lead Independent Director are to:
    • preside over any executive session of the non-management directors or the independent directors;
    • participate with the Chairman of the Board and Chief Executive Officer in the preparation of the
      agenda for Board meetings;
    • serve as a member of the Executive Committee;
    • coordinate providing timely feedback from the directors to the Chairman of the Board and Chief
      Executive Officer;
    • be identified on the Company’s website and in the Company’s annual proxy statement as the
      principal contact for shareholder communications with the Board; and
    • monitor on behalf of, and discuss with, the non-management directors of the Company any
      shareholder communications received by such non-management directors.

Director Independence
      The Board of Directors assesses the independence of each director annually in accordance with the
Company’s Corporate Governance Guidelines, the New York Stock Exchange listing standards and, with
respect to members of the Audit and Finance Committee, the rules of the SEC. No director is considered
independent unless the Board of Directors determines that the director has no direct or indirect material
relationship with the Company.
     The Board has determined that, following the 2006 Annual Meeting of Shareholders, assuming
election of the Board’s three nominees for director, nine of the ten directors are independent in accordance
with the standards specified above. The directors that the Board has determined to be independent are
John C. Baldwin, Jenne K. Britell, William F. Buehler, William R. Grant, Rosanne Haggerty, Gary M.
Pfeiffer, Daniel C. Stanzione, Gail R. Wilensky and John B. Ziegler. The one director who the Board has
determined is not independent is Surya N. Mohapatra, the Chairman of the Board, President and Chief
Executive Officer of the Company. Dr. Mohapatra was not deemed independent as he is the President and
Chief Executive Officer of the Company. Mr. Flaherty will not be standing for re-election as a director at
the 2006 Annual Meeting of Shareholders. Mr. Flaherty is not deemed independent under the New York
Stock Exchange listing standards because Mr. Flaherty’s brother-in-law is a tax partner with
PricewaterhouseCoopers LLP, independent registered public accounting firm of the Company. To the best
knowledge of the Company, the Company has never had any professional relationship or contact with Mr.
Flaherty’s brother-in-law.
     The Board has determined that Mr. Grant is independent. In making that determination, the Board has
considered certain relationships that Mr. Grant has with the Company that the Board believes are not
material. Mr. Grant does not have any relationships that fall within the scope of the bright line tests under

                                                     18
the New York Stock Exchange listing standards. However, the Board determined that Mr. Grant was not
independent in 2003 and 2004 because, between 2001 and 2004, the Company made certain investments
in companies in which Mr. Grant and/or Galen Associates, of which Mr. Grant is the Vice-Chairman, also
had made investments. In respect of certain investments made by the Company during 2001 and 2002, Mr.
Grant and/or Galen Associates introduced the investment opportunities to the Company (but did not
receive any fees from the Company) and co-invested on the same terms as the Company. In respect of the
investments made by the Company during 2003 and 2004, the Company invested in companies in which
Mr. Grant and/or Galen Associates had an investment on a direct basis without the involvement of Mr.
Grant and/or Galen Associates. The Company did not make any investments during 2005 in any entity
introduced by Mr. Grant and/or Galen Associates or in which Mr. Grant and/or Galen Associates has co-
invested. None of these investments is material to the Company. In accordance with the procedures
established by the Governance Committee beginning in July 2002, the Governance Committee reviewed all
such transactions before they were consummated. In addition, in accordance with the Company’s Corporate
Governance Guidelines and the Governance Committee charter, any future transactions in which the
Company co-invests with, or is presented with investment opportunities by, Mr. Grant and/or Galen
Associates will be made in accordance with the Company’s Corporate Governance Guidelines and
reviewed by the Governance Committee and/or the Board before they are consummated.
      The Board has determined that Mr. Ziegler is independent notwithstanding that he has certain
relationships with the Company that the Board believes are not material. Until January 31, 2006, Mr.
Ziegler was the President, Worldwide Consumer Healthcare of GlaxoSmithKline plc (“GlaxoSmithKline’’),
which beneficially owns approximately 18% of the outstanding common stock of the Company. The
common stock of Quest Diagnostics that GlaxoSmithKline beneficially owns was issued in August 1999 in
connection with the acquisition of SmithKline Beecham Clinical Laboratories, Inc. (“SBCL’’). In
connection with the acquisition, the Company entered into a clinical trials agreement. These transactions
are described below under “Related Transactions.’’ Mr. Ziegler was not involved with the negotiation of
any of these arrangements.
     As part of its assessment of the independence of the directors, the Board has reviewed the
commercial relationships between Quest Diagnostics and each company or organization with which any
non-employee director of Quest Diagnostics is affiliated or is an employee or a director. The Board has
determined that none of these relationships is material based on a broad review of the facts and
circumstances of each relationship, including the fact that, in each case, the aggregate amount of any
commercial transactions between Quest Diagnostics and any such company in any of the last three fiscal
years of such company was not in excess of 1.1 % of the consolidated gross revenues of such other
company.

Related Transactions

GlaxoSmithKline
      SmithKline Beecham Corporation, a subsidiary of GlaxoSmithKline (“SmithKline Beecham’’), owns
36,504,308 shares of Quest Diagnostics’ common stock as of March 15, 2006, which it obtained on
August 16, 1999 as consideration, together with $1.025 billion in cash (prior to giving effect to a $95
million post-closing purchase price reduction), for its sale of SBCL to Quest Diagnostics. SmithKline
Beecham originally received 50,257,344 shares in the transaction (adjusted for the stock splits in May
2001 and June 2005). In addition to the two agreements discussed below, in connection with the purchase
of SBCL, SmithKline Beecham agreed to indemnify Quest Diagnostics, on an after tax basis, against
certain matters primarily related to taxes and billing and professional liability claims. At December 31,
2005, accounts payable and accrued expenses included $28 million due to SmithKline Beecham, primarily
related to tax benefits associated with indemnifiable matters.

Stockholders Agreement
     At the closing of the acquisition of SBCL, SmithKline Beecham and Quest Diagnostics entered into a
stockholders agreement. During the ten-year term of the stockholders agreement, SmithKline Beecham has
the right to designate two nominees to the Quest Diagnostics’ Board of Directors (or, if required by UK

                                                   19
GAAP, three nominees if the Company’s Board of Directors consists of more than ten directors) as long
as SmithKline Beecham owns at least 20% of the outstanding common stock of Quest Diagnostics and
one nominee to the Quest Diagnostics Board of Directors as long as SmithKline Beecham owns at least
10% of the outstanding common stock of Quest Diagnostics. The stockholders agreement imposes
limitations on the right of SmithKline Beecham to sell or vote its shares and prohibits SmithKline
Beecham from acquiring in excess of 29.5% of the outstanding common stock of Quest Diagnostics.

Clinical Trials Agreement
      At the closing of the acquisition of SBCL, SmithKline Beecham and Quest Diagnostics entered into a
global clinical trials testing agreement, under which Quest Diagnostics would serve as the primary
provider of SmithKline Beecham’s clinical trials testing requirements for ten years. In December 2002,
Quest Diagnostics entered into a new long-term agreement with GlaxoSmithKline (formed from the
SmithKline Beecham and Glaxo Wellcome merger in December 2000) under which Quest Diagnostics will
be the exclusive provider of central laboratory testing services to support GlaxoSmithKline’s clinical trial
testing in certain markets. In addition, on a selected basis, Quest Diagnostics will provide support for
other early stage research and development activity. GlaxoSmithKline will pay Quest Diagnostics based
upon a fee schedule attached to the global clinical trials agreement, subject to adjustment. During 2005,
Quest Diagnostics billed approximately $69 million to GlaxoSmithKline with respect to services primarily
performed under the clinical trials testing agreement. This amount represents approximately 1.3% of Quest
Diagnostics’ net revenues for 2005 and about 0.2% of GlaxoSmithKline’s net revenues for 2005.




                                                    20
STOCK OWNERSHIP INFORMATION
    The following table shows, as of March 15, 2006, the number of shares of Quest Diagnostics’
common stock beneficially owned by (1) each person who is known to Quest Diagnostics to own
beneficially more than 5% of the Company common stock, (2) each director of Quest Diagnostics and
each nominee, (3) each named executive officer and (4) all directors, nominees and executive officers of
Quest Diagnostics as a group.
                                                                                                                        Number of Shares              Percentage
                                                      Name                                                             Beneficially Owned(6)        of Class(2)(3)

                                                                                                                                 36,504,308(1)
GlaxoSmithKline plc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                          18.4%
                                                                                                                                     16,666(2)
John C. Baldwin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                        *
Jenne K. Britell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                    500              *
                                                                                                                                     86,960(2)
William F. Buehler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                         *
                                                                                                                                     58,516(2)(5)
James F. Flaherty III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                          *
                                                                                                                                    159,317(2)
William R. Grant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                         *
                                                                                                                                    538,084(3)
Robert A. Hagemann . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                             *
                                                                                                                                     65,914(2)
Rosanne Haggerty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                         *
                                                                                                                                  1,157,268(3)(7)
Surya N. Mohapatra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                           *
                                                                                                                                     72,184(3)
Robert E. Peters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                       *
                                                                                                                                      8,615(2)
Gary M. Pfeiffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                       *
                                                                                                                                    359,095(3)
Michael E. Prevoznik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                           *
                                                                                                                                     81,890(2)
Daniel C. Stanzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                          *
                                                                                                                                     93,890(2)
Gail R. Wilensky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                         *
                                                                                                                                    345,411(3)
David M. Zewe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                        *
                                                                                                                                    100,055(2)(4)
John B. Ziegler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                      *
All Directors, Nominees and Executive Officers as a Group
                                                                                                                                  3,149,632(2)(3)(5)(7) 1.6%
  (16 persons) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 * Less than 1%.
(1) The business address of GlaxoSmithKline plc is Glaxo Wellcome House, Berkeley Avenue, Greenford, Middlesex UB6/ONN,
    England. The ownership information is based solely on the information contained on a Schedule 13D filed by GlaxoSmithKline
    plc with the SEC in December 2004, as amended. SmithKline Beecham Corporation, a wholly owned subsidiary of
    GlaxoSmithKline plc, holds the shares of record.
(2) Includes options issued under the Amended and Restated Long-Term Incentive Plan for Non-Employee Directors that are presently
    exercisable or exercisable within 60 days. Dr. Baldwin, Mr. Buehler, Mr. Flaherty, Mr. Grant, Ms. Haggerty, Mr. Pfeiffer, Dr.
    Stanzione, Dr. Wilensky, and Mr. Ziegler have the right to purchase 16,666; 76,666; 56,516; 159,317; 61,666; 6,666; 76,666;
    88,666; and 100,055 shares, respectively, pursuant to such presently exercisable options.
(3) Includes shares of common stock of the Company which are subject to options issued under the Amended and Restated
    Employee Long-Term Incentive Plan that are presently exercisable or exercisable within 60 days. Dr. Mohapatra, Mr. Hagemann,
    Mr. Peters, Mr. Prevoznik and Mr. Zewe have the right to purchase 1,040,180; 451,980; 57,333; 331,930; and 309,465 shares,
    respectively, pursuant to such presently exercisable options.
(4) Mr. Ziegler is nominated to be a director of the Company by SmithKline Beecham Corporation, a subsidiary of GlaxoSmithKline
    plc, pursuant to the Shareholders Agreement discussed above. Mr. Ziegler, the former President, Worldwide Consumer Healthcare
    of GlaxoSmithKline, disclaims beneficial ownership of the shares of common stock of the Company owned by SmithKline
    Beecham Corporation.
(5) Includes 2,000 shares of common stock of the Company owned by the children of Mr. Flaherty as to which he disclaims
    beneficial ownership.
(6) All directors and executive officers have sole voting power and sole dispositive power over all shares of common stock of the
    Company beneficially owned by them.
(7) Includes 29,542 shares of common stock of the Company directly beneficially owned by Dr. Mohapatra as grantor/trustee of a
    qualified Grantor Retained Annuity Trust.




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  • 1. Quest Diagnostics Incorporated 1290 Wall Street West Lyndhurst, New Jersey 07071 (201) 393-5000 March 28, 2006 Dear Fellow Shareholder: It is my pleasure to invite you to attend the 2006 Annual Meeting of Shareholders of Quest Diagnostics Incorporated. The meeting will be held at 10:30 a.m. EDT on Thursday, May 4, 2006, at The Waldorf-Astoria, 301 Park Avenue, New York, New York. Attendance at the meeting will be limited to shareholders of record at the close of business on March 20, 2006, or their duly appointed proxy holders (not to exceed one proxy per shareholder). If you plan to attend the meeting, please review, “How can I attend the annual meeting?’’ on page 3, for information about our admittance procedures. At the meeting, you will vote on a number of important matters described in the attached proxy statement. Your vote is very important. Whether you plan to attend the meeting or not, I urge you to vote your shares. Most shareholders have a choice of voting by signing and returning your proxy card or by voting by telephone or the Internet. Instructions on how to vote are included with your proxy card and these proxy materials. Thank you for your continued support of Quest Diagnostics. Sincerely, Surya N. Mohapatra, Ph.D. Chairman, President and Chief Executive Officer
  • 2. NOTICE OF ANNUAL MEETING OF SHAREHOLDERS March 28, 2006 To the Shareholders of Quest Diagnostics Incorporated: Date: . . . . . . . . . . . . . . . . . . . . . . . . Thursday, May 4, 2006 Time: . . . . . . . . . . . . . . . . . . . . . . . . 10:30 a.m. EDT Place: . . . . . . . . . . . . . . . . . . . . . . . . The Waldorf-Astoria 301 Park Avenue New York, New York 10022 • Elect one class of directors for a three-year term; Items of Business: . . . . . . . . . . . . • Ratify the selection of our independent registered public accounting firm for 2006; • Act on a proposal to approve an amendment to our charter to increase our authorized shares; • Act on a proposal to approve an amended employee stock purchase plan; and • Consider any other business properly brought before the meeting. Record Date: . . . . . . . . . . . . . . . . . March 20, 2006. Holders of Quest Diagnostics common stock of record at the close of business on that date are entitled to vote at the meeting. By order of the Board of Directors, Sirisha Gummaregula Corporate Secretary It is important that your shares be represented and voted whether or not you plan to attend the meeting. YOU CAN VOTE BY PROXY IN ONE OF THREE WAYS: 1. VIA THE INTERNET: Visit www.cesvote.com. 2. BY PHONE: Call 1-888-693-8683. 3. BY MAIL: Promptly return your signed and dated proxy card/voting form in the enclosed postage pre-paid envelope.
  • 3. Table of Contents Page Information About Our 2006 Annual Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Information About Shareholder Proposals and Nominations for Our 2007 Annual Meeting . . . . . . . . . . 4 Matters To Be Considered at the 2006 Annual Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Proposal No. 1—Election of Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Proposal No. 2—Ratification of PricewaterhouseCoopers LLP as the Company’s Independent Registered Public Accounting Firm for 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Proposal No. 3—Approval of Amendment to Our Charter to Increase Our Authorized Shares . . . 8 Proposal No. 4—Approval of Amended Employee Stock Purchase Plan . . . . . . . . . . . . . . . . . . . . . . . 9 Information About Our Corporate Governance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Governance Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Independence of the Board of Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Shareholder Access and Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Board Nomination Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Board Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Code of Business Ethics and Stock Ownership of Directors and Officers . . . . . . . . . . . . . . . . . . . . . . 14 Board Membership Changes During 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Other Board Membership Changes Since Date of Last Annual Meeting . . . . . . . . . . . . . . . . . . . . . . . 15 Board Committees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Audit and Finance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Compensation Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Governance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Quality, Safety & Compliance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Executive Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Lead Independent Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Director Independence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Related Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Stock Ownership Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Directors’ Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Additional Information Regarding Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Summary Compensation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Option/SAR Grants and Long-Term Incentive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Option Exercises and Fiscal Year-End Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Equity Compensation Plan Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Pension Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Employment Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Severance Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Report of the Compensation Committee on Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Compensation Committee Interlocks and Insider Participation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Performance Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Section 16(a) Beneficial Ownership Reporting Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Report of the Audit and Finance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Fees and Services of PricewaterhouseCoopers LLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Audit and Finance Committee Pre-Approval Policies and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Appendix A—Proposed Amendment to the Restated Certificate of Incorporation Appendix B—Amended and Restated Employee Stock Purchase Plan Appendix C—Charter of the Audit and Finance Committee
  • 4. PROXY STATEMENT QUEST DIAGNOSTICS INCORPORATED 1290 Wall Street West Lyndhurst, New Jersey 07071 (201) 393-5000 INFORMATION ABOUT OUR 2006 ANNUAL MEETING This proxy statement and form of proxy and voting instructions are being mailed, starting March 31, 2006. Who is soliciting my vote? The Board of Directors of Quest Diagnostics Incorporated, a Delaware corporation (“Quest Diagnostics,’’ the “Company,’’ “we’’ or “our’’) is soliciting your vote for our 2006 annual meeting. What will I vote on? You are being asked to vote on: • the election of three directors for a three-year term; • the ratification of the selection of our independent registered public accounting firm for 2006; • a proposal to approve an amendment to our charter to increase our authorized shares; and • a proposal to approve an amended employee stock purchase plan. What is the record date for the annual meeting? The close of business on March 20, 2006 is the record date for determining those shareholders who are entitled to vote at the annual meeting and at any adjournment or postponement. How many votes can be cast by all shareholders? Holders of our common stock, par value $0.01 per share, as of the close of business on the record date will be entitled to vote at the annual meeting of shareholders. On that date, there were 198,250,639 shares of our common stock outstanding, each of which is entitled to one vote for each matter to be voted on at the annual meeting. There is no cumulative voting. How many votes must be present to hold the annual meeting? A majority of the votes that may be cast, or 99,125,320 votes, present in person or represented by proxy, is needed to hold the annual meeting. We urge you to vote by proxy even if you plan to attend the annual meeting. That will help us to know as soon as possible that enough votes will be present to hold the annual meeting. How do I vote? You may vote at the annual meeting by proxy or in person. If you are a holder of record (that is, if your shares are registered in your own name with our transfer agent), you may vote by mail using the enclosed proxy card, by telephone, on the Internet or by attending the annual meeting and voting in person as described below. If you hold your shares in street name (that is, you hold your shares through a broker, bank or other holder of record), please refer to the information on the voting instruction form forwarded to you by your bank, broker or other holder of record to see which voting options are available to you.
  • 5. Vote on the Internet You can choose to vote on the Internet by visiting www.cesvote.com. The directions for Internet voting are on your proxy card or voting instruction form. Vote by Mail If you choose to vote by mail, simply mark, sign and date your proxy card and return it in the enclosed postage pre-paid envelope. Vote by Telephone You can also vote by calling 1-888-693-8683. Vote at the Annual Meeting If you want to vote in person at the annual meeting and you hold your shares in street name, you must obtain an additional proxy from your broker, bank or other holder of record authorizing you to vote. You must bring this proxy to the annual meeting. How many votes will be required to elect a director or to adopt the proposals? • To elect directors to the Board, a plurality of the votes cast at the annual meeting is needed. A plurality means that the three nominees receiving the largest number of votes cast will be elected. • To ratify the selection of our independent registered public accounting firm, approve the amendment to our charter to increase our authorized shares, approve the amended employee stock purchase plan and any other matters properly raised at the annual meeting, a majority of the shares represented at the annual meeting and entitled to vote is needed. Can I change or revoke my proxy? Yes, you may change your vote or revoke your proxy at any time before it is exercised. To do so, you should: • send in a new proxy card with a later date; • send a written revocation to the Corporate Secretary; • cast a new vote by telephone or the Internet; or • attend the annual meeting and vote in person. Written revocations of a prior vote must be sent by mail to Sirisha Gummaregula, Corporate Secretary, at Quest Diagnostics Incorporated, 1290 Wall Street West, Lyndhurst, New Jersey 07071. If you attend the annual meeting and vote in person, your vote will revoke any previously submitted proxy. What if I do not indicate my vote for one or more of the matters on my proxy card? If you return a signed proxy card without indicating your vote, your shares will be voted: • for the election of the three persons named under the caption “Election of Directors;’’ • for the ratification of the selection of the independent registered public accounting firm; • for the approval of the amendment to our charter to increase our authorized shares; and • for the approval of the amended employee stock purchase plan. What if I withhold my vote or I vote to abstain? In the election of directors, you can vote for the three directors named on the proxy card, or you can indicate that you are withholding your vote from one or more of the directors. Withheld votes will not affect the vote on the election of directors. 2
  • 6. In connection with the proposals to ratify the selection of our independent registered public accounting firm, approve the amendment to our charter to increase our authorized shares and approve the amended employee stock purchase plan, you may vote for or against the proposals, or you may abstain from voting on the proposals. Abstentions on the proposal to ratify the selection of our independent registered public accounting firm, approve the amendment to our charter to increase our authorized shares or approve the amended employee stock purchase plan will have the same effect as a vote against the proposals. What happens if I do not vote? If you do not vote shares held in your name, those shares will not be voted. If your shares are held through a broker, your shares can be voted on the election of directors, the ratification of the selection of our independent registered public accounting firm and the approval to amend our charter to increase our authorized shares in your broker’s discretion. No broker may vote your shares on the proposal to approve the amended employee stock purchase plan without your specific instructions. If your broker votes your shares on some, but not all, of the proposals, the votes will be “broker non- votes’’ for any proposal on which they do not vote. Broker non-votes will have no effect on the election of directors, the ratification of the selection of the independent registered public accounting firm, the proposal to approve the amendment to our charter to increase our authorized shares, or the proposal to approve the amended employee stock purchase plan. What if there is voting on other matters? Our by-laws require prior notification of a shareholder’s intent to vote on other matters at the annual meeting. The deadline has passed and we have not received any notifications. If other matters properly arise at the annual meeting for consideration, the persons named in the proxy will have the discretion to vote on those matters for you. Will the Company’s independent registered public accounting firm be present at the annual meeting? Yes, representatives of PricewaterhouseCoopers LLP are expected to attend the annual meeting to answer your questions and will have the opportunity to make a statement, if they desire to do so. The Audit and Finance Committee of the Board of Directors of the Company has approved the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the 2006 fiscal year, subject to ratification by shareholders. Will the directors attend the annual meeting? Our policy is, where practical, to schedule the annual meeting of shareholders on a day on which we also schedule a regular meeting of the Board. This year, we have scheduled a regular meeting of the Board on the date of the annual meeting of shareholders. We encourage our directors to attend each annual meeting of shareholders and expect that all of our directors will attend the annual meeting this year. All of our directors attended the 2005 annual meeting of shareholders. How can I attend the annual meeting? Only shareholders as of the record date, March 20, 2006 (or their proxy holders), may attend the annual meeting. If you plan to attend the annual meeting or appoint someone to attend as your proxy, please check the box on your proxy card, or, if you are voting by telephone or the Internet, follow the instructions provided to indicate your plan to attend. You or your proxy holder will then need to show photo identification to pick up your admittance card at the shareholders’ admittance desk at the annual meeting. If you do not inform us in advance that you plan to attend the annual meeting, you will need to bring with you: • photo identification; and 3
  • 7. • if you hold your shares in street name, proof of ownership of your shares as of the record date, such as a letter or account statement from your broker or bank. What happens if the annual meeting is postponed or adjourned? Your proxy will still be valid and may be voted at the postponed or adjourned annual meeting. You will still be able to change or revoke your proxy until it is voted. Do any shareholders beneficially own more than 5% of our common stock? Yes. According to public filings, as of March 15, 2006, GlaxoSmithKline plc is the only holder known to us to be the beneficial owner of more than 5% of our common stock. For further information, please see “Stock Ownership Information’’ on page 21. How can I review the list of shareholders eligible to vote? A list of shareholders as of the record date will be available for inspection and review upon request of any shareholder to our Corporate Secretary at 1290 Wall Street West, Lyndhurst, New Jersey 07071. We will also make the list available at the annual meeting. Who will pay the expenses incurred in connection with the solicitation of my vote? The Company pays the cost of preparing proxy materials and soliciting your vote. Proxies may be solicited on our behalf by our directors, officers or employees by telephone, electronic or facsimile transmission or in person. We have hired Georgeson Shareholder Communications, Inc. to distribute and solicit proxies and we will pay for their distribution and solicitation services an estimated fee of $12,000, plus expenses. INFORMATION ABOUT SHAREHOLDER PROPOSALS AND NOMINATIONS FOR OUR 2007 ANNUAL MEETING How do I submit a proposal for the 2007 annual meeting? If you want your proposal to be included in next year’s proxy statement, you should send it to the Corporate Secretary at the Company’s principal executive offices at 1290 Wall Street West, Lyndhurst, New Jersey 07071. We must receive your proposal by the close of business on December 1, 2006. If you want to present your proposal for consideration at the 2007 annual meeting, but do not meet the deadline for inclusion in the proxy statement, our by-laws require that notice of your proposal be received by the Corporate Secretary at the Company’s principal executive offices between January 1, 2007 and February 15, 2007 and conform to the requirements in our by-laws. How do I nominate a candidate for director at the 2007 annual meeting? You must notify the Lead Independent Director by sending an e-mail to LeadIndependentDirector@quest diagnostics.com or by writing to the Board of Directors or any independent board member c/o the Corporate Secretary at the Company’s principal executive offices at 1290 Wall Street West, Lyndhurst, New Jersey 07071 of your nominations between January 1, 2007 and February 15, 2007. Your notice must also conform to the requirements in our by-laws. 4
  • 8. MATTERS TO BE CONSIDERED AT THE 2006 ANNUAL MEETING Proposal No. 1 Election of Directors The Company’s Restated Certificate of Incorporation, as amended, requires the Company to have at least three directors but not more than twelve directors. The number of directors is set by the Board of Directors of the Company (the “Board of Directors’’ or the “Board’’). The Board presently consists of eleven directors. The Board is divided into three classes with three-year terms. New directors elected by the Board serve until the first annual meeting and are then assigned to a class for election by shareholders. At this meeting, three directors are seeking election for a three-year term expiring in 2009. Certain information as of March 15, 2006 concerning each of the nominees and continuing directors and their business experience during the past five years is provided below. Nominees for Election Each nominee is currently a director of the Company. Each nominee has consented to serve if elected. The terms of these three directors seeking election expire at the adjournment of the 2006 annual meeting. Nominees for the Board with Terms Expiring at the 2009 Annual Meeting Jenne K. Britell, Ph.D., 63, has been the Chairman and Chief Executive Officer of Structured Ventures, Inc., a firm that advises domestic and foreign companies on financial services and product strategy, since 2001. From 1996 to 2000, she was a senior officer of GE Capital, serving as President of GE Capital Global Commercial & Mortgage Banking and Executive Vice President of GE Capital Global Consumer Finance from 1999 to 2000 and serving as President and Chief Executive Officer of GE Capital Central and Eastern Europe from 1998 to 1999. Dr. Britell is a director of Aames Investment Corporation, Crown Holdings, Inc., Lincoln National Corporation and West Pharmaceutical Services, Inc. Dr. Britell has been a director of Quest Diagnostics since August 2005. Gail R. Wilensky, Ph.D., 62, is a Senior Fellow at Project HOPE, an international non-profit health foundation, which she joined in 1993. From 1997 to 2001, she was the chair of the Medicare Payment Advisory Commission, which advises Congress on all issues relating to Medicare. From 1995 to 1997 she chaired the Physician Payment Review Commission, which advised Congress on physician payment and other Medicare issues. In 1992 and 1993, Dr. Wilensky served as a deputy assistant to the President of the United States for policy development relating to health and welfare issues. From 1990 to 1992, she was the administrator of the Health Care Financing Administration where she directed the Medicare and Medicaid programs. Dr. Wilensky is a director of Cephalon Inc., Gentiva Health Services, Inc., Manor Care Inc., SRA International, Inc. and United Healthcare Corporation. Dr. Wilensky has been a director of Quest Diagnostics since January 1997. 5
  • 9. John B. Ziegler, 60, was the President, Worldwide Consumer Healthcare, GlaxoSmithKline plc (the parent of SmithKline Beecham plc) from 1998 to January 2006. Mr. Ziegler joined SmithKline Beecham in 1991 as the head of SB Consumer Healthcare-North American Division. He became Executive Vice President of SmithKline Beecham from 1996 to 1998. He has been a director of Quest Diagnostics since May 2000. Mr. Ziegler has been recommended by SmithKline Beecham for nomination as a director of Quest Diagnostics pursuant to the Stockholders Agreement with SmithKline Beecham. See “Related Transactions—Stockholders Agreement.’’ Directors Not Up for Election Members of the Board Continuing in Office with Terms Expiring at the 2007 Annual Meeting John C. Baldwin, M.D., 57, is the President and Chief Executive Officer of CBR Institute for Biomedical Research. From 1998 to 2005, Dr. Baldwin was the Associate Provost for Health Affairs at Dartmouth College and Professor of Surgery at Dartmouth Medical School. From 1994 to 1998, Dr. Baldwin was the head of the surgical programs at Baylor College of Medicine and its affiliated hospitals. Dr. Baldwin was also the Governor of the American College of Surgeons from 1991 through 1997 and the President of the International Society of Cardiothoracic Surgeons in 1999. Dr. Baldwin has served as the Vice-Chair of the Board of Overseers of Harvard University. Dr. Baldwin is a director of Massey Energy Co. Dr. Baldwin has been a director of Quest Diagnostics since May 2004. William R. Grant, 81, is the Vice-Chairman of Galen Associates, a venture capital firm, which he co-founded in 1989. From 1989 to February 2006, he was the Chairman of Galen Associates. From 1987 to 1989, he was Chairman of New York Life International and from 1979 to 1987, he was President and Chairman of MacKay-Shields Financial Corp. He is also a former director and Vice Chairman of SmithKline Beecham plc, and is currently a director of Advanced Medical Optics, Inc. (non-executive Chairman), Massey Energy Co., and Vasogen Inc. Mr. Grant has been a director of Quest Diagnostics since August 1999. Surya N. Mohapatra, Ph.D., 56, is Chairman of the Board, President and Chief Executive Officer of Quest Diagnostics. Prior to joining the Company in February 1999 as Senior Vice President and Chief Operating Officer, he was Senior Vice President of Picker International, a worldwide leader in advanced medical imaging technologies, where he served in various executive positions during his 18-year tenure. Dr. Mohapatra was appointed President and Chief Operating Officer in June 1999, the Chief Executive Officer in May 2004, and Chairman of the Board in December 2004. Dr. Mohapatra has been a director of Quest Diagnostics since October 2002. 6
  • 10. Members of the Board Continuing in Office with Terms Expiring at the 2008 Annual Meeting William F. Buehler, 66, retired in 2001 as Vice Chairman of Xerox Corporation, which he joined in 1991. At Xerox, Mr. Buehler was responsible for five business groups: Production Systems, Office Document Products, Document Services, Channels and Supplies. He also oversaw Corporate Strategic Services, Business Development and Systems Software and Architecture. Prior to joining Xerox, Mr. Buehler spent 27 years with AT&T, primarily in sales, marketing and general management positions. Mr. Buehler is a director of A.O. Smith. Mr. Buehler has been a director of Quest Diagnostics since July 1998. Rosanne Haggerty, 45, is the founder and President of Common Ground Community, a not-for-profit organization that develops strategies to end homelessness in New York City. Prior to founding Common Ground Community in 1990, she was the coordinator of housing development at Brooklyn Catholic Charities. Ms. Haggerty is a 2001 MacArthur Foundation Fellow. Ms. Haggerty has been a director of Quest Diagnostics since February 2002. Gary M. Pfeiffer, 56, is the Senior Vice President and Chief Financial Officer of E.I. du Pont de Nemours and Company. Mr. Pfeiffer joined DuPont in 1974, where he has held positions of increasing responsibility in finance and international operations, as well as in various DuPont divisions. Mr. Pfeiffer is a director of Talbots, Inc. Mr. Pfeiffer has been a director of Quest Diagnostics since December 2004. Daniel C. Stanzione, Ph.D., 60, retired from Lucent Technologies Incorporated in 2000 and is President Emeritus of Bell Laboratories. Dr. Stanzione began his career in 1972 with Bell Laboratories, where he led the teams working on the first microprocessors and digital signal processors. He was appointed president of Network Systems, Lucent’s largest business unit, in 1996 and was appointed Chief Operating Officer of Lucent in 1997. Dr. Stanzione is a director of InterNAP Network Services Corporation. Dr. Stanzione has been a director of Quest Diagnostics since January 1997. THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THE ELECTION OF EACH NOMINEE FOR DIRECTOR. Proposal No. 2 Ratification of PricewaterhouseCoopers LLP as the Company’s Independent Registered Public Accounting Firm for 2006 The Audit and Finance Committee has approved the selection of PricewaterhouseCoopers LLP (“PWC’’) to serve as our independent registered public accounting firm for 2006. Our by-laws do not require that our shareholders ratify the selection of PWC as the independent registered public accounting firm. The Audit and Finance Committee will consider the outcome of this vote in its decision to appoint an independent registered public accounting firm next year, but is not bound by the shareholders’ vote. Even if the selection of PWC is ratified, the Audit and Finance 7
  • 11. Committee may change the appointment at any time during the year if it determines that a change would be in the best interest of the Company and its shareholders. Representatives of PWC are expected to be present at the annual meeting, will have the opportunity to make a statement if they desire to do so and will be available to respond to appropriate questions. For information concerning the selection of PWC, see “Report of the Audit and Finance Committee’’ on page 36. For information concerning fees paid to PWC, see “Fees and Services of PricewaterhouseCoopers LLP’’ on page 37. THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THE RATIFICATION OF PRICEWATERHOUSECOOPERS LLP AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR 2006. Proposal No. 3 Approval of Amendment to Our Charter to Increase Our Authorized Shares On February 16, 2006, your Board unanimously declared advisable an amendment to Quest Diagnostics’ Restated Certificate of Incorporation to provide for an increase in the number of shares of common stock, par value $0.01 per share, included in the authorized capital of the Company, from 300,000,000 shares to 600,000,000 shares, subject to the approval of the amendment by the shareholders at the 2006 Annual Meeting of Shareholders. The proposed amendment would not change the number of shares of preferred stock of the Company that is currently authorized (10,000,000 preferred shares). The text of this proposed amendment is included in the Certificate of Amendment attached as Appendix A to this Proxy Statement. Overview. Quest Diagnostics is required by Delaware law to obtain shareholder approval for any amendment to our Restated Certificate of Incorporation. After considering Quest Diagnostics’ current number of issued and outstanding shares of common stock, our current outstanding equity obligations and various other factors discussed in “Reasons for Proposal’’ below, your Board of Directors has determined that it is necessary to increase the number of shares of common stock authorized for issuance from 300,000,000 shares to 600,000,000 shares. If approved by our shareholders, the increase in authorized capital would become effective by filing the Certificate of Amendment with the Secretary of State of the State of Delaware, which we plan to do as soon as reasonably practicable after the 2006 Annual Meeting of Shareholders. Reasons for Proposal. Your Board believes that the proposed amendment will restore the flexibility for issuances of equity that was available to the Board prior to the stock split effected on June 20, 2005, thus maintaining the Company’s ability to respond to various corporate opportunities which may arise in the future while continuing to have enough shares in reserve to satisfy current obligations. Following the 2:1 stock split effected on June 20, 2005, the Company had 198,250,639 shares of common stock issued and outstanding as of March 20, 2006. The unissued shares would be available for issuance from time to time for various corporate purposes, including stock splits, stock dividends, employee benefit and compensation plans, acquisitions and public or private sales for cash as a means of raising capital. The increase in authorized capital would mean that the additional authorized shares would be available for issuance from time to time at the discretion of your Board without further shareholder action except as may be required for a particular transaction by law, the policies of the New York Stock Exchange or any contractual obligations of the Company that may be in effect at the time of issuance which will in many cases avoid any potential expense or delay in connection with obtaining shareholder approval for a particular issuance of shares. Principal Effects on Rights of Current Shareholders. The terms of the additional shares of common stock will be identical to those of the currently outstanding shares of common stock. However, the proposal to increase the authorized capital of the Company may affect the rights of existing holders of common stock to the extent that future issuances of common stock reduce each existing shareholder’s proportionate ownership and voting rights in the Company. In addition, possible dilution caused by future issuances of common stock could lead to a decrease in Quest Diagnostics’ net income per share in future periods and a resulting decline in the market price of Quest Diagnostics’ common stock. Shareholders of the Company have no preemptive rights with respect to common stock. Thus, should the Board of Directors elect to issue additional shares with respect to common 8
  • 12. stock, existing shareholders would not have any preferential rights to purchase such shares. Although an increase in the number of authorized shares of common stock could, under certain circumstances, be construed as having an anti-takeover effect (for example, by diluting the stock ownership of a person seeking to effect a change in the composition of the Board of Directors or contemplating a tender offer or other transaction for the combination of the Company with another company), the Company is not proposing this amendment to the Restated Certificate of Incorporation in response to any effort to accumulate the Company’s stock or to obtain control of the Company by means of a merger, tender offer, or solicitation in opposition to management. It is not anticipated that adoption of the amendment would have any other effect on the holders of Quest Diagnostics’ common stock. THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THIS PROPOSAL. Proposal No. 4 Approval of Amended Employee Stock Purchase Plan On February 16, 2006, upon the recommendation of our Compensation Committee, our Board of Directors unanimously approved the Amended and Restated Employee Stock Purchase Plan (the “Program’’), subject to approval by our shareholders at the 2006 Annual Meeting of Shareholders. The Program is an amendment and restatement of the Company’s Employee Stock Purchase Plan, which has been in effect since January 1, 1997 and was most recently approved by the Board of Directors in 2005, and is now being presented for approval by our shareholders. The Program will be applicable only to shares purchased and transferred on or after the date it is approved by the shareholders (the “Program Effective Date’’). We believe that the Program encourages and assists our employees to acquire shares of our common stock thereby better aligning their interests with other shareholders, helps provide for future financial security of our employees and fosters good employee relationships. Therefore, combined with the other benefits that we provide to our employees, we believe that the Program is helpful in attracting, retaining and motivating employees. A general description of the principal features of the Program is set forth below, but this description is qualified in its entirety by reference to the full text of the Program attached hereto as Appendix B. Purpose. The purpose of the Program is to provide eligible employees with an opportunity to increase their proprietary interest in the success of the Company by purchasing common stock from the Company on favorable terms and paying for such purchases through periodic payroll deductions. Administration. The Program is administered by a committee appointed by the Board of Directors, consisting of at least three employees of the Company (the “Committee’’). Eligibility. Any person who is employed by the Company (or by a subsidiary or other entity designated by the Committee) and is regularly scheduled to work for at least 20 hours per week is eligible to participate in the Program. No employee can participate in the Program if the employee would, immediately after participating in the Program, own stock of the Company possessing five percent or more of the total combined voting power or value of all classes of stock of the Company or of its parent or subsidiary companies. Non-employee directors are not eligible to participate in the Program. As of December 31, 2005, approximately 36,000 employees were eligible to participate in the Program. Shares Subject to the Program. The shares subject to the Program are shares of Quest Diagnostics Incorporated common stock, par value $0.01 per share. 5,000,000 shares have been reserved for issuance under the Program after the Program Effective Date. The market value of the 5,000,000 shares reserved for issuance under the Program, as of March 15, 2006, was $261,150,000. Adjustments. The Program allows the Board to make proportionate adjustments to the number of shares approved for the Program in connection with any increase or decrease in the number of issued shares of the Company’s common stock resulting from a stock split, reverse stock split, stock dividend, combination or reclassification of the Company’s common stock, or any other change affecting the Company’s common stock, as the Board determines may be required to preserve the benefits or potential benefits intended under the Program. 9
  • 13. Except for the adjustments described above, no issuance by the Company of shares of stock of any class or securities convertible into shares of stock or any class will affect, and no adjustment will be made by reason of such issuance to, the number or price of shares that are subject to the Program. Offering Period. On the last business day of each calendar month or such other period as the Committee may determine (the “Offering Period’’), the Company will make an offering to eligible employees to purchase shares under the Program. Participation in the Program. An employee eligible to participate in the Program on the first day of any Offering Period may participate in the offering for that Offering Period by completing and forwarding by a date, selected by the Committee, prior to that Offering Period a payroll deduction authorization form to the employee’s appropriate payroll location. The payroll deduction may not exceed the greater of 10% of the base salary the employee receives during the Offering Period and such lesser amount as is determined by the Committee. During the Offering Period, the Company will be deemed to make a matching contribution of an additional amount to the employee’s payroll deduction account equal to 0.1765 multiplied by the amount of the payroll deduction authorized by the employee. Payroll deductions made during an Offering Period may not be withdrawn from the employee’s payroll deduction account except if required in connection with the suspension or amendment of the Program or, subject to the approval of the Committee, in the event of an employee’s death and upon the request of his estate. Purchase of Shares. Each employee participating in any offering under the Program will be granted an option to purchase, upon the effective date of such offering, as many shares as may be purchased with the funds in the employee’s payroll deduction account. The price for each share will be the per share market price of the Company’s common stock on the last business day of any Offering Period. The account of each participating employee will be totaled and the funds in the employee’s account, including the additional amounts deemed to be contributed by the Company as of that date, will be used to purchase shares. The employee will be deemed to have exercised an option to purchase such shares at the market price and the employee’s account will be charged for the amount of the purchase. The “market price’’ of shares for this purpose means the closing price of shares of the Company’s common stock on a given day as reported in the Wall Street Journal or, if no sales of the Company’s common stock were made on that day, the closing price of such shares on the next preceding day on which sales were made. To the extent an employee is deemed to have exercised an option to purchase fractional shares under the Program, the value of the fractional shares will be paid to the employee in cash at the same time he or she is delivered certificates for whole shares purchased during the Offering Period. Amendments. The Board of Directors (or any officer of the Company to whom it delegates such authority) may at any time, or from time to time, amend or suspend the Program in any respect, including retroactively to the extent necessary, except that no such action will be made without shareholder approval if such approval is required under tax or stock exchange rules and regulations. Termination. The Program and all rights of employees under any offering will terminate on the earlier of the day that participating employees become entitled to purchase a number of shares greater than the number of shares remaining available under the Program and at any earlier time, at the discretion of the Board of Directors. However, no offering under the Program shall be made which shall extend beyond the tenth anniversary of the Program Effective Date. Federal Income Tax Consequences. The following is a general summary of the federal income tax consequences related to participation in the Program. It is not intended to provide or supplement tax advice to employees. Employees should consult their own tax advisor to determine the actual federal, state, local and/or foreign tax consequences to them and the effect, if any, of gift, estate and inheritance taxes of participating in the Program in light of their particular circumstances. An employee will have already recognized taxable income, and the Company generally is entitled to a deduction, for compensation paid to him or her and subsequently used to purchase common stock under the Program. Additionally, an employee will recognize taxable income pursuant to the Program 10
  • 14. in respect of common stock purchased with the additional contribution made by the Company to the account. The amount of income the employee recognizes will be equal to the fair market value of the common stock purchased with such additional contribution at the end of the Offering Period. This amount, together with the amount initially deducted by the employee from his or her compensation, will be the employee’s tax basis for the common stock purchased under the Program. The holding period begins on that day for purposes of determining whether the employee has long-term or short-term capital gain or loss on a subsequent sale of common stock. The Company generally will be entitled to a deduction with respect to the taxable income recognized by the employee in respect of the additional contribution made by the Company. Summary of Benefits It is not possible to determine the number of shares that will be purchased under the Program in the future by any particular individual. The table below shows the number of shares purchased from Company contributions during 2005 under the Program. New Plan Benefits Employee Stock Purchase Plan Dollar Value($)(1) Number of Shares(2) Name and Position Surya N. Mohapatra Chairman, President and Chief Executive Officer . . . . . . . . . . . . . . . . . 0 0 Robert A. Hagemann Senior Vice President and Chief Financial Officer . . . . . . . . . . . . . . . . 5,030 100 David M. Zewe Senior Vice President, Diagnostic Testing Operations . . . . . . . . . . . . . 689 14 Michael E. Prevoznik Senior Vice President and General Counsel . . . . . . . . . . . . . . . . . . . . . . 918 18 Robert E. Peters Vice President, Sales and Marketing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,147 23 Executive Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,784 155 Non-Executive Director Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not applicable Not applicable Non-Executive Officer Employee Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,098,755 61,790 (1) The amounts in this column represent the matching contributions made by the Company with respect to 2005 payroll deductions (representing 17.65% of the applicable employee contribution). (2) The amounts in this column represent the number of shares purchased or contributed by the Company attributable to matching contributions made by the Company with respect to 2005 payroll deductions, after giving effect to the stock split on June 20, 2005. The amounts do not include the number of shares purchased or contributed by the Company attributable to employee con- tributions with respect to 2005 payroll deductions, which aggregated 0 shares for Dr. Mohapatra; 567 shares for Mr. Hagemann; 78 shares for Mr. Zewe; 104 shares for Mr. Prevoznik; 130 shares for Mr. Peters; 879 shares for the executive group and 349,978 shares for the non-executive officer employee group. THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR’’ THIS PROPOSAL. 11
  • 15. INFORMATION ABOUT OUR CORPORATE GOVERNANCE Governance Practices The Board of Directors believes that good corporate governance is critical to achieve business success. The Board has adopted a set of Corporate Governance Guidelines to enhance its own effectiveness and to implement best practices for the Company’s corporate governance. These principles are reviewed from time to time for possible revision to respond to changing regulatory requirements, evolving best practices and the concerns of our shareholders. Our Corporate Governance Guidelines are published on our website at www.questdiagnostics.com. Highlights of our corporate governance practices are described below. Independence of the Board of Directors • A substantial majority of the Board were independent directors during 2005 (8 of 11 members) and will be independent directors following the 2006 Annual Meeting of Shareholders (9 of 10 members), as defined under the New York Stock Exchange listing standards. See “Director Independence’’ on page 18 for further information regarding the independence of the directors. • The Audit and Finance Committee, Compensation Committee, Governance Committee and Quality, Safety & Compliance Committee are composed solely of independent directors. • Each standing committee, other than the Executive Committee, is chaired by an independent director. • None of the independent directors receives any consulting or other non-director fees from the Company. Shareholder Access and Rights • Shareholders are asked to ratify the selection of the independent registered public accounting firm at our annual meeting. • All equity compensation plans, other than our Employee Stock Purchase Plan, have been approved by shareholders. Our Employee Stock Purchase Plan is proposed for approval by shareholders at the 2006 Annual Meeting of Shareholders. See “Proposal No. 4—Approval of Amended Employee Stock Purchase Plan’’ on page 9 for a description of the Employee Stock Purchase Plan. • The Company provides a process for shareholders to send communications to the Board of Directors. Shareholders may communicate directly with the full Board or any of the independent Board members by sending an email to our Lead Independent Director at LeadIndependentDirector@questdiagnostics.com or writing to the full Board or any independent Board member c/o Corporate Secretary, 1290 Wall Street West, Lyndhurst, New Jersey 07071. Communications received at the email address are automatically routed to the Company’s Lead Independent Director with a copy to the Company’s General Counsel and Corporate Secretary. The Lead Independent Director determines whether any such communication received from a shareholder should be distributed to other members of the Board. All communications received by the Corporate Secretary addressed to any director and that involves the interest of the Company or its shareholders, other than solicitations, are forwarded to the intended directors. • The Audit and Finance Committee and the Board of Directors have established a procedure whereby complaints and concerns with respect to accounting, internal controls and auditing matters may be submitted to the Audit and Finance Committee. All communications received by a director from a shareholder relating to the Company’s accounting, internal controls or auditing matters are immediately forwarded to the Chairman of the Audit and Finance Committee and are investigated and responded to in accordance with the procedures established by the Audit and Finance Committee. In addition, the Company has established a hotline (known as CHEQline) pursuant to which employees can anonymously report accounting, internal controls and financial irregularities (as well as compliance concerns on other laws). • Our policy is, where practical, to schedule the annual meeting of shareholders on a day on which we also schedule a regular meeting of the Board. This year, we have scheduled a regular meeting of the Board on the date of the annual meeting of shareholders. We encourage our directors to attend each 12
  • 16. annual meeting of shareholders and expect that all of our directors will attend the annual meeting this year. All of our directors attended the 2005 annual meeting of shareholders. Board Nomination Process • The Governance Committee is responsible for reviewing with the Board, on an annual basis, the composition of the Board as a whole and whether the Company is being well served by the directors taking into account each director’s independence, skills, experience, availability for service to the Company and other factors the Governance Committee deems appropriate. The Governance Committee is responsible for recommending director nominees to the Board, including renomination of persons who are already directors. The Governance Committee does not set specific, minimum qualifications that nominees must meet in order for the Governance Committee to recommend them to the Board, but rather believes that each nominee should be evaluated based on his or her own merits, taking into account the needs of Quest Diagnostics and the composition of the Board. Recommendations are made by the Governance Committee in accordance with the policies and principles of its charter and taking into account the following key qualifications and factors established by the Governance Committee and the Board: Qualifications: Reputation for highest ethical standards and integrity consistent with Quest Diagnostics’ values of Quality, Integrity, Innovation, Accountability, Collaboration and Leadership; and Relevant experience such as: • Chief Executive Officer or Chief Operating Officer (or similar responsibilities) current or past; or • Demonstrated expertise in business function(s) such as sales, operations, finance, strategy, legal or human resources; or • Medical practitioners and/or science and health thought leaders. Other factors considered by the Governance Committee and the Board are the following: At least a majority of the directors meet the criteria for independence under the New York Stock Exchange listing standards and any categorical standards established by the Board. Prior experience as a director or executive officer of a public company. Number of current board positions and other time commitments. Overall range of skills, experience and seniority represented by the Board as a whole. • The Governance Committee considers suggestions from many sources, including shareholders, regarding possible candidates for director. Shareholders may recommend candidates for consideration as director to the Governance Committee by sending an email to our Lead Independent Director or writing to the Board at the address specified under “Information About Our Corporate Governance—Shareholder Access and Rights’’. See “Information About Shareholder Proposals and Nominations for our 2007 Annual Meeting’’ for the deadlines and process by which you may submit director nominees for consideration by the Governance Committee for the 2007 annual meeting of shareholders. The notice should contain the proposed nominee’s full name, biographical information regarding the proposed nominee and the proposed nominee’s relationship to the shareholder and should be submitted in compliance with our by-laws. The Governance Committee expects to consider qualified shareholder nominees for director in the same manner as recommendations it receives from any other source. • The process of nominating directors is as follows. First, the Governance Committee identifies a need to add a new Board member who meets specific criteria or to fill a vacancy on the Board. The Governance Committee then identifies candidates by seeking input from Board members and considering recommendations for nominees submitted by shareholders. The Governance Committee also hires third- party search firms to assist in identifying and evaluating candidates for nomination and considers any nominees recommended by shareholders. After the Governance Committee ranks the candidates, the Chairman of the Board and the Chief Executive Officer interviews the candidates selected by the 13
  • 17. Governance Committee. The Lead Independent Director (who is the Chair of the Governance Committee) and other Board members conduct subsequent interviews of these candidates. After the interview process, the Governance Committee re-assesses the candidates and determines which candidates the Governance Committee will recommend to the Board for nomination as a director. The Governance Committee then makes its recommendation to the entire Board, which determines which candidates are nominated by the Board of Directors or elected to fill a vacancy. A formal offer is then extended by the Chairman of the Board and the Lead Independent Director to the candidate(s) nominated or elected to fill a vacancy by the Board of Directors. Board Practices • Non-management directors meet privately in executive sessions at all regularly scheduled meetings with the Lead Independent Director presiding. Independent directors meet privately in executive sessions at least once per year with the Lead Independent Director presiding. • The Board performs an annual assessment of its structure and performance, including reviewing the Board’s activities against those set out in its Corporate Governance Guidelines and committee charters and making recommendations for changes or improvements in practices or structure. • The Board reviews annually senior management succession planning and reviews Company policies for the development of management personnel. • Independent directors have unlimited access to officers and employees of the Company. • Director training sessions are scheduled regularly with senior management, our independent registered public accounting firm and compensation consultants to keep the Board updated on changes in the Company’s businesses, its markets and best practices in general. Directors are also offered the opportunity to attend director education programs offered by third parties. • Independent directors receive a significant portion of their annual compensation in equity to further align our directors with the interest of our shareholders. • Independent directors have unlimited access to independent legal, financial or other advisors as they may deem necessary, without obtaining management approval. • The Governance Committee reviews incumbent directors prior to recommending the slate for election. The review emphasizes directors’ commitment to serving the Company, attendance at meetings and commitment to shareholders, employees and other constituencies served by the Company. • Committee chairs and members are rotated from time to time to give the directors a broader knowledge of the Company’s affairs. • Committees report on their activities to the Board at each Board meeting. • Materials related to agenda items are provided to directors sufficiently in advance of meetings to allow the directors to prepare for discussion of the items. Code of Business Ethics and Stock Ownership of Directors and Officers • The Company has adopted a Code of Business Ethics (the “Code’’) applicable to all directors, officers and employees. The Code is posted on the Investor Relations—Corporate Governance section of our website at www.questdiagnostics.com. Any waivers from any provisions of the Code for executive officers, senior financial officers and directors will be promptly disclosed to shareholders. In addition, any amendments to the Code, as well as any waivers from certain provisions of the Code relating to our Chief Executive Officer and senior financial officers will be posted at the above website address. • The Board’s stock ownership guidelines require each non-management director to own at least 6,000 shares of common stock of the Company before they can receive full cash settlement for their stock option exercises. • The Company’s stock ownership guidelines require officers to maintain a minimum ownership position in the Company stock before they can receive full cash settlement for their stock option exercises. See “Report of the Compensation Committee on Executive Compensation’’ on page 31. • Stock ownership information of directors and executive officers is shown in the table entitled “Stock Ownership Information’’ on page 21. 14
  • 18. Board Membership Changes During 2005 Dr. Jenne K. Britell was elected to the Board on August 6, 2005. Other Board Membership Changes Since Date of Last Annual Meeting On February 16, 2006, during a regularly scheduled Board meeting, Mr. James F. Flaherty III, a current director of the Company, notified the Board that he declines to be considered as a candidate for re-election as a director of the Company at the 2006 Annual Meeting of Shareholders. Mr. Flaherty’s term as a director will expire on the date of the 2006 Annual Meeting of Shareholders after three years of service to the Company. Mr. Flaherty’s decision was not the result of any disagreement with the Company. Board Committees In order to fulfill its responsibilities, the Board has delegated certain authority to its committees. There are five standing committees. During 2005, the Board held nine regular meetings. Each of our directors attended at least 75% of the total number of meetings of the Board of Directors and the committees on which he or she served. Any of our directors may attend meetings of any committee in which such director is not a member. Mr. Flaherty and Mr. Grant attended the meetings of the Audit and Finance Committee in 2005 as guests. The following table shows the membership of, and the number of meetings held by, each of the committees during 2005. Quality Audit and Safety & Directors Finance Compensation Governance Compliance Executive John C. Baldwin, M.D . . . . . . . . . . . . . . . . . . . . . . . . . X X Jenne K. Britell, Ph.D.(1) . . . . . . . . . . . . . . . . . . . . . . . X William F. Buehler . . . . . . . . . . . . . . . . . . . . . . . . . . . . X* X James F. Flaherty III(2) . . . . . . . . . . . . . . . . . . . . . . . . . X* X X William R. Grant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rosanne Haggerty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X X Surya N. Mohapatra, Ph.D . . . . . . . . . . . . . . . . . . . . . X* Gary M. Pfeiffer(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X* X X X Daniel C. Stanzione, Ph.D . . . . . . . . . . . . . . . . . . . . . X X X* X Gail R. Wilensky, Ph.D . . . . . . . . . . . . . . . . . . . . . . . . X X* John B. Ziegler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X X Number of Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8 3 4 0 * Chair of the committee. (1) Dr. Britell was elected to the Board on August 6, 2005. (2) Mr. Flaherty ceased to be the chair of the Audit and Finance Committee and a member of the Governance Committee and the Executive Committee following the 2005 annual meeting of shareholders on May 10, 2005. Thereafter, Mr. Flaherty attended the meetings of the Audit and Finance Committee as a guest. (3) Mr. Pfeiffer became the chair of the Audit and Finance Committee and a member of the Governance Committee, the Compensation Committee and the Executive Committee following the 2005 annual meeting of shareholders on May 10, 2005. A brief description of each of the Board committees and their functions is set forth below. Additional information about the committees can be found in the committee charters, which are available on the Investor Relations—Corporate Governance section of our website at www.questdiagnostics.com. Printed copies of these charters, the Corporate Governance Guidelines or the Code may be obtained without charge by writing to the Corporate Secretary. The charter for the Audit and Finance Committee is also attached hereto as Appendix C. 15
  • 19. Audit and Finance Committee The Audit and Finance Committee: • Assists the Board in monitoring the quality and integrity of the financial statements of the Company and financial reporting procedures and the Company’s compliance with legal and regulatory requirements. • Oversees management’s accounting for the Company’s financial results and reviews the timeliness and adequacy of the reporting of those results and related judgments. • Oversees the internal audit function and makes inquiry into the audits of the Company’s books made internally and by outside independent registered public accounting firms. • Assists the Board in monitoring the independent registered public accounting firm’s qualifications and independence and appoints and replaces the independent registered public accounting firm, oversees the independent registered public accounting firm and is responsible for the compensation of the independent registered public accounting firm. • Pre-approves services to be performed by the independent registered public accounting firm. • Reviews with the Company’s independent registered public accounting firm and informs the Board of any significant accounting matters, including critical accounting policies and judgments. • Advises and makes recommendations with regard to certain financing transactions and other significant financial policies and actions. • Establishes procedures for the receipt, retention and treatment of complaints relating to accounting, internal accounting controls, and for the confidential, anonymous submission by employees of concerns regarding accounting or auditing matters. • May, to the extent it deems necessary or appropriate, retain independent legal, accounting or other advisors. • Reviews and reports to the Board on the Company’s management of its financial resources. • Reviews the performance of the Audit and Finance Committee. Each member of our Audit and Finance Committee is independent under the rules of the Securities and Exchange Commission (“SEC’’) and the New York Stock Exchange listing standards. Each of Jenne K. Britell and Gary M. Pfeiffer qualifies as an “audit committee financial expert’’ as defined by the SEC. Each member of our Audit and Finance Committee is “financially literate’’ as required by the New York Stock Exchange listing standards. For descriptions of the experience of Dr. Britell and Mr. Pfeiffer, see “Election of Directors’’ on pages 5 and 7. Compensation Committee The Compensation Committee: • Reports to the Board with respect to the performance of the Chief Executive Officer and reviews and approves the compensation of the Chief Executive Officer based on the directors’ evaluation of the Chief Executive Officer and the Company’s financial performance, shareholder return, competitive compensation data and other factors. • Approves the compensation of the other executive officers and oversees the performance of other executive officers. • Annually reviews and approves for other executive officers of the Company annual base salary, annual incentive compensation, and long-term incentive compensation. • Has the authority to retain and terminate consultants to assist in the evaluation and compensation of directors, the Chief Executive Officer and elected officers; and has the authority to approve the fees and other retention terms of such consultants. • Reviews and recommends to the Board the compensation of Company directors. • Supports the Board in the senior management succession planning process. 16
  • 20. • Recommends to the Board the equity based, incentive compensation and retirement plans, policies and programs of the Company. • Reviews and approves employment agreements, severance agreements and change in control agreements, and any additional special or supplemental benefits for executive officers, and with respect to the Chief Executive Officer, makes recommendations to the Board for approval by the Board. • Administers the equity-based and incentive compensation plans of the Company. • Reviews the performance of the Compensation Committee. Each member of our Compensation Committee is independent under the New York Stock Exchange listing standards. Governance Committee The Governance Committee: • Actively seeks individuals qualified to become Board members, and reviews and recommends possible candidates for Board membership, taking into account such criteria as independence, diversity, age, skills, occupation and experience in the context of the needs of the Board. • Reviews the structure of the Board, its committee structure and overall size. • Advises the Board regarding significant developments in corporate governance matters. • Reviews the Company’s Corporate Governance Guidelines periodically and advises the Board of the Company’s compliance with its Corporate Governance Guidelines and applicable laws and regulations. • Recommends for Board approval assignments of Board members to committees. • Reviews relationships and transactions of directors, executive officers and senior financial officers for possible conflicts of interest. • Monitors compliance with the Company’s Code of Business Ethics. • Determines a schedule for regular executive sessions of the Board in which non-management directors meet without management participation. • Oversees and assesses the processes by which management provides information to the Board, as well as the quality and timeliness of the information received. • Leads the Board and each committee of the Board in its annual performance self-evaluation. • Reviews the performance of the Governance Committee. Each member of our Governance Committee is independent under the New York Stock Exchange listing standards. Quality, Safety & Compliance Committee The Quality, Safety & Compliance Committee: • Reviews the Company’s policies, programs and performance relating to billing compliance, environmental health and safety, equal opportunity employment practices, fraud and abuse, and medical quality assurance to insure continuous improvement and compliance with applicable rules and regulations. • Reviews legal matters pertinent to the Company and the Company’s compliance with its legal and regulatory obligations. • Reviews and recommends to the Board action with respect to significant external and internal investigations as they relate to possible violations of law by the Company or its directors, officers, employees or agents. • Monitors and reports to the Board status of significant regulatory, legislative and legal developments affecting the business of the Company. 17
  • 21. • Reports to the Audit and Finance Committee regarding material legal matters and compliance with legal and regulatory requirements. • Reviews the performance of the Quality, Safety & Compliance Committee. Each member of our Quality, Safety & Compliance Committee is independent under the New York Stock Exchange listing standards. Executive Committee The Executive Committee: • Acts for the Board when Board action is required except with respect to certain major corporate matters, such as mergers, election of directors, removal of directors or the Chief Executive Officer, amendment of the Company’s charter or by-laws, declaration of dividends and such matters as are delegated to other committees of the Board. Lead Independent Director The Board of Directors has elected Daniel C. Stanzione, Ph.D., as the Lead Independent Director. The principal responsibilities of the Lead Independent Director are to: • preside over any executive session of the non-management directors or the independent directors; • participate with the Chairman of the Board and Chief Executive Officer in the preparation of the agenda for Board meetings; • serve as a member of the Executive Committee; • coordinate providing timely feedback from the directors to the Chairman of the Board and Chief Executive Officer; • be identified on the Company’s website and in the Company’s annual proxy statement as the principal contact for shareholder communications with the Board; and • monitor on behalf of, and discuss with, the non-management directors of the Company any shareholder communications received by such non-management directors. Director Independence The Board of Directors assesses the independence of each director annually in accordance with the Company’s Corporate Governance Guidelines, the New York Stock Exchange listing standards and, with respect to members of the Audit and Finance Committee, the rules of the SEC. No director is considered independent unless the Board of Directors determines that the director has no direct or indirect material relationship with the Company. The Board has determined that, following the 2006 Annual Meeting of Shareholders, assuming election of the Board’s three nominees for director, nine of the ten directors are independent in accordance with the standards specified above. The directors that the Board has determined to be independent are John C. Baldwin, Jenne K. Britell, William F. Buehler, William R. Grant, Rosanne Haggerty, Gary M. Pfeiffer, Daniel C. Stanzione, Gail R. Wilensky and John B. Ziegler. The one director who the Board has determined is not independent is Surya N. Mohapatra, the Chairman of the Board, President and Chief Executive Officer of the Company. Dr. Mohapatra was not deemed independent as he is the President and Chief Executive Officer of the Company. Mr. Flaherty will not be standing for re-election as a director at the 2006 Annual Meeting of Shareholders. Mr. Flaherty is not deemed independent under the New York Stock Exchange listing standards because Mr. Flaherty’s brother-in-law is a tax partner with PricewaterhouseCoopers LLP, independent registered public accounting firm of the Company. To the best knowledge of the Company, the Company has never had any professional relationship or contact with Mr. Flaherty’s brother-in-law. The Board has determined that Mr. Grant is independent. In making that determination, the Board has considered certain relationships that Mr. Grant has with the Company that the Board believes are not material. Mr. Grant does not have any relationships that fall within the scope of the bright line tests under 18
  • 22. the New York Stock Exchange listing standards. However, the Board determined that Mr. Grant was not independent in 2003 and 2004 because, between 2001 and 2004, the Company made certain investments in companies in which Mr. Grant and/or Galen Associates, of which Mr. Grant is the Vice-Chairman, also had made investments. In respect of certain investments made by the Company during 2001 and 2002, Mr. Grant and/or Galen Associates introduced the investment opportunities to the Company (but did not receive any fees from the Company) and co-invested on the same terms as the Company. In respect of the investments made by the Company during 2003 and 2004, the Company invested in companies in which Mr. Grant and/or Galen Associates had an investment on a direct basis without the involvement of Mr. Grant and/or Galen Associates. The Company did not make any investments during 2005 in any entity introduced by Mr. Grant and/or Galen Associates or in which Mr. Grant and/or Galen Associates has co- invested. None of these investments is material to the Company. In accordance with the procedures established by the Governance Committee beginning in July 2002, the Governance Committee reviewed all such transactions before they were consummated. In addition, in accordance with the Company’s Corporate Governance Guidelines and the Governance Committee charter, any future transactions in which the Company co-invests with, or is presented with investment opportunities by, Mr. Grant and/or Galen Associates will be made in accordance with the Company’s Corporate Governance Guidelines and reviewed by the Governance Committee and/or the Board before they are consummated. The Board has determined that Mr. Ziegler is independent notwithstanding that he has certain relationships with the Company that the Board believes are not material. Until January 31, 2006, Mr. Ziegler was the President, Worldwide Consumer Healthcare of GlaxoSmithKline plc (“GlaxoSmithKline’’), which beneficially owns approximately 18% of the outstanding common stock of the Company. The common stock of Quest Diagnostics that GlaxoSmithKline beneficially owns was issued in August 1999 in connection with the acquisition of SmithKline Beecham Clinical Laboratories, Inc. (“SBCL’’). In connection with the acquisition, the Company entered into a clinical trials agreement. These transactions are described below under “Related Transactions.’’ Mr. Ziegler was not involved with the negotiation of any of these arrangements. As part of its assessment of the independence of the directors, the Board has reviewed the commercial relationships between Quest Diagnostics and each company or organization with which any non-employee director of Quest Diagnostics is affiliated or is an employee or a director. The Board has determined that none of these relationships is material based on a broad review of the facts and circumstances of each relationship, including the fact that, in each case, the aggregate amount of any commercial transactions between Quest Diagnostics and any such company in any of the last three fiscal years of such company was not in excess of 1.1 % of the consolidated gross revenues of such other company. Related Transactions GlaxoSmithKline SmithKline Beecham Corporation, a subsidiary of GlaxoSmithKline (“SmithKline Beecham’’), owns 36,504,308 shares of Quest Diagnostics’ common stock as of March 15, 2006, which it obtained on August 16, 1999 as consideration, together with $1.025 billion in cash (prior to giving effect to a $95 million post-closing purchase price reduction), for its sale of SBCL to Quest Diagnostics. SmithKline Beecham originally received 50,257,344 shares in the transaction (adjusted for the stock splits in May 2001 and June 2005). In addition to the two agreements discussed below, in connection with the purchase of SBCL, SmithKline Beecham agreed to indemnify Quest Diagnostics, on an after tax basis, against certain matters primarily related to taxes and billing and professional liability claims. At December 31, 2005, accounts payable and accrued expenses included $28 million due to SmithKline Beecham, primarily related to tax benefits associated with indemnifiable matters. Stockholders Agreement At the closing of the acquisition of SBCL, SmithKline Beecham and Quest Diagnostics entered into a stockholders agreement. During the ten-year term of the stockholders agreement, SmithKline Beecham has the right to designate two nominees to the Quest Diagnostics’ Board of Directors (or, if required by UK 19
  • 23. GAAP, three nominees if the Company’s Board of Directors consists of more than ten directors) as long as SmithKline Beecham owns at least 20% of the outstanding common stock of Quest Diagnostics and one nominee to the Quest Diagnostics Board of Directors as long as SmithKline Beecham owns at least 10% of the outstanding common stock of Quest Diagnostics. The stockholders agreement imposes limitations on the right of SmithKline Beecham to sell or vote its shares and prohibits SmithKline Beecham from acquiring in excess of 29.5% of the outstanding common stock of Quest Diagnostics. Clinical Trials Agreement At the closing of the acquisition of SBCL, SmithKline Beecham and Quest Diagnostics entered into a global clinical trials testing agreement, under which Quest Diagnostics would serve as the primary provider of SmithKline Beecham’s clinical trials testing requirements for ten years. In December 2002, Quest Diagnostics entered into a new long-term agreement with GlaxoSmithKline (formed from the SmithKline Beecham and Glaxo Wellcome merger in December 2000) under which Quest Diagnostics will be the exclusive provider of central laboratory testing services to support GlaxoSmithKline’s clinical trial testing in certain markets. In addition, on a selected basis, Quest Diagnostics will provide support for other early stage research and development activity. GlaxoSmithKline will pay Quest Diagnostics based upon a fee schedule attached to the global clinical trials agreement, subject to adjustment. During 2005, Quest Diagnostics billed approximately $69 million to GlaxoSmithKline with respect to services primarily performed under the clinical trials testing agreement. This amount represents approximately 1.3% of Quest Diagnostics’ net revenues for 2005 and about 0.2% of GlaxoSmithKline’s net revenues for 2005. 20
  • 24. STOCK OWNERSHIP INFORMATION The following table shows, as of March 15, 2006, the number of shares of Quest Diagnostics’ common stock beneficially owned by (1) each person who is known to Quest Diagnostics to own beneficially more than 5% of the Company common stock, (2) each director of Quest Diagnostics and each nominee, (3) each named executive officer and (4) all directors, nominees and executive officers of Quest Diagnostics as a group. Number of Shares Percentage Name Beneficially Owned(6) of Class(2)(3) 36,504,308(1) GlaxoSmithKline plc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.4% 16,666(2) John C. Baldwin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * Jenne K. Britell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 * 86,960(2) William F. Buehler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 58,516(2)(5) James F. Flaherty III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 159,317(2) William R. Grant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 538,084(3) Robert A. Hagemann . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 65,914(2) Rosanne Haggerty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 1,157,268(3)(7) Surya N. Mohapatra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 72,184(3) Robert E. Peters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 8,615(2) Gary M. Pfeiffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 359,095(3) Michael E. Prevoznik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 81,890(2) Daniel C. Stanzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 93,890(2) Gail R. Wilensky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 345,411(3) David M. Zewe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * 100,055(2)(4) John B. Ziegler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * All Directors, Nominees and Executive Officers as a Group 3,149,632(2)(3)(5)(7) 1.6% (16 persons) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * Less than 1%. (1) The business address of GlaxoSmithKline plc is Glaxo Wellcome House, Berkeley Avenue, Greenford, Middlesex UB6/ONN, England. The ownership information is based solely on the information contained on a Schedule 13D filed by GlaxoSmithKline plc with the SEC in December 2004, as amended. SmithKline Beecham Corporation, a wholly owned subsidiary of GlaxoSmithKline plc, holds the shares of record. (2) Includes options issued under the Amended and Restated Long-Term Incentive Plan for Non-Employee Directors that are presently exercisable or exercisable within 60 days. Dr. Baldwin, Mr. Buehler, Mr. Flaherty, Mr. Grant, Ms. Haggerty, Mr. Pfeiffer, Dr. Stanzione, Dr. Wilensky, and Mr. Ziegler have the right to purchase 16,666; 76,666; 56,516; 159,317; 61,666; 6,666; 76,666; 88,666; and 100,055 shares, respectively, pursuant to such presently exercisable options. (3) Includes shares of common stock of the Company which are subject to options issued under the Amended and Restated Employee Long-Term Incentive Plan that are presently exercisable or exercisable within 60 days. Dr. Mohapatra, Mr. Hagemann, Mr. Peters, Mr. Prevoznik and Mr. Zewe have the right to purchase 1,040,180; 451,980; 57,333; 331,930; and 309,465 shares, respectively, pursuant to such presently exercisable options. (4) Mr. Ziegler is nominated to be a director of the Company by SmithKline Beecham Corporation, a subsidiary of GlaxoSmithKline plc, pursuant to the Shareholders Agreement discussed above. Mr. Ziegler, the former President, Worldwide Consumer Healthcare of GlaxoSmithKline, disclaims beneficial ownership of the shares of common stock of the Company owned by SmithKline Beecham Corporation. (5) Includes 2,000 shares of common stock of the Company owned by the children of Mr. Flaherty as to which he disclaims beneficial ownership. (6) All directors and executive officers have sole voting power and sole dispositive power over all shares of common stock of the Company beneficially owned by them. (7) Includes 29,542 shares of common stock of the Company directly beneficially owned by Dr. Mohapatra as grantor/trustee of a qualified Grantor Retained Annuity Trust. 21