Exhibit 25.1

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                                    FORM T-1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            STATEMENT OF ELIGIBILITY
                   UNDER THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                             SECTION 305(b)(2) |__|



                              THE BANK OF NEW YORK
               (Exact name of trustee as specified in its charter)

New York                                                   13-5160382
(State of incorporation                                    (I.R.S. employer
if not a U.S. national bank)                               identification no.)

One Wall Street, New York, N.Y.                            10286
(Address of principal executive offices)                   (Zip code)



                         QUEST DIAGNOSTICS INCORPORATED
               (Exact name of obligor as specified in its charter)


Delaware                                                   16-1387862
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)


                     Quest Diagnostics Holdings Incorporated
               (Exact name of obligor as specified in its charter)

Delaware                                                   23-2324658
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)


                  Quest Diagnostics Clinical Laboratories, Inc.
               (Exact name of obligor as specified in its charter)

Delaware                                                   38-20-84239
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)



                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

California                                                 95-2701802
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

Maryland                                                   52-0890739
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)


                              Quest Diagnostics LLC
               (Exact name of obligor as specified in its charter)

Illinois                                                   36-4257926
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

Michigan                                                   38-1882750
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

Connecticut                                                06-1460613
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

Massachusetts                                              04-3248020
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                     Quest Diagnostics of Pennsylvania Inc.
               (Exact name of obligor as specified in its charter)

Delaware                                                   22-3137283
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Quest Diagnostics Incorporated
               (Exact name of obligor as specified in its charter)

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Ohio                                                       34-0944454
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                                  MetWest Inc.
               (Exact name of obligor as specified in its charter)

Delaware                                                   33-0363116
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                          Nichols Institute Diagnostics
               (Exact name of obligor as specified in its charter)

California                                                 95-2955451
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                               DPD Holdings, Inc.
               (Exact name of obligor as specified in its charter)

Delaware                                                   93-0988106
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                       Diagnostics Reference Services Inc.
               (Exact name of obligor as specified in its charter)

Maryland                                                   22-3479439
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                        Laboratory Holdings Incorporated
               (Exact name of obligor as specified in its charter)

Massachusetts                                              04-2449994
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)

                         Pathology Building Partnership
               (Exact name of obligor as specified in its charter)

Maryland                                                   51-1188454
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)


                   Quest Diagnostics Investments Incorporated
               (Exact name of obligor as specified in its charter)

Delaware                                                   51-0314231
(State or other jurisdiction of                            (I.R.S. employer



incorporation or organization)                             identification no.)

                     Quest Diagnostics Finance Incorporated
               (Exact name of obligor as specified in its charter)

Delaware                                                   51-0390719
(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                             identification no.)


Quest Diagnostics Incorporated
One Malcolm Avenue
Teterboro, New Jersey                                      07608
(Address of principal executive offices)                   (Zip code)

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                                 Debt Securities
                       (Title of the indenture securities)
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1.       General information. Furnish the following information as to the
         Trustee:

         (a)      Name and address of each examining or supervising authority to
                  which it is subject.

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                  Name                                   Address
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         Superintendent of Banks of          2 Rector Street, New York,
         the State of New York               N.Y.  10006, and Albany, N.Y. 12203

         Federal Reserve Bank of New York   33 Liberty Plaza, New York,
                                            N.Y.  10045

         Federal Deposit Insurance          Washington, D.C.  20429
         Corporation

         New York Clearing House            New York, New York   10005
         Association

         (b) Whether it is authorized to exercise corporate trust powers.

         Yes.

2.       Affiliations with Obligor.

         If the obligor is an affiliate of the trustee, describe each such
         affiliation.

         None.

16.      List of Exhibits.

         Exhibits identified in parentheses below, on file with the Commission,
         are incorporated herein by reference as an exhibit hereto, pursuant to
         Rule 7a-29 under the Trust Indenture Act of 1939 (the "Act") and 17
         C.F.R. 229.10(d).

         1.       A copy of the Organization Certificate of The Bank of New York
                  (formerly Irving Trust Company) as now in effect, which
                  contains the authority to commence business and a grant of
                  powers to exercise corporate trust powers. (Exhibit 1 to
                  Amendment No. 1 to Form T-1 filed with Registration Statement
                  No. 33-6215, Exhibits 1a and 1b to Form T-1 filed with
                  Registration Statement No. 33-21672 and Exhibit 1 to Form T-1
                  filed with Registration Statement No. 33-29637.)

         4.       A copy of the existing By-laws of the Trustee. (Exhibit 4 to
                  Form T-1 filed with Registration Statement No. 33-31019.)

         6.       The consent of the Trustee required by Section 321(b) of the
                  Act. (Exhibit 6 to Form T-1 filed with Registration Statement
                  No. 33-44051.)

         7.       A copy of the latest report of condition of the Trustee
                  published pursuant to law or to the requirements of its
                  supervising or examining authority.



                                    SIGNATURE



        Pursuant to the requirements of the Act, the Trustee, The Bank of New
York, a corporation organized and existing under the laws of the State of New
York, has duly caused this statement of eligibility to be signed on its behalf
by the undersigned, thereunto duly authorized, all in The City of New York, and
State of New York, on the 3rd day of July, 2001.


                                            THE BANK OF NEW YORK



                                            By:     /s/  THOMAS E. TABOR
                                                --------------------------------
                                                Name:    THOMAS E. TABOR
                                                Title:   VICE PRESIDENT










                                                                                                               EXHIBIT 7


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                                          Consolidated Report of Condition of

                                                 THE BANK OF NEW YORK

                                       of One Wall Street, New York, N.Y. 10286
                                        And Foreign and Domestic Subsidiaries,
a member of the Federal Reserve System, at the close of business March 31, 2001 published in accordance with a call made by the
Federal Reserve Bank of this District pursuant to the provisions of the Federal Reserve Act.

                                                                                              Dollar Amounts
                                                                                               In Thousands
                                                                                              
ASSETS
Cash and balances due from depository institutions:
   Noninterest-bearing balances and currency and coin..                                          $ 2,811,275
   Interest-bearing balances...........................                                            3,133,222
Securities:
   Held-to-maturity securities.........................                                              147,185
   Available-for-sale securities.......................                                            5,403,923
Federal funds sold and Securities purchased under
   agreements to resell................................                                            3,378,526
Loans and lease financing receivables:
   Loans and leases held for sale......................                                               74,702
   Loans and leases, net of unearned income............                                           37,471,621
   LESS: Allowance for loan and lease losses...........                                              599,061
   Loans and leases, net of unearned
     income and allowance..............................                                           36,872,560
Trading Assets.........................................                                           11,757,036
Premises and fixed assets (including capitalized
   leases).............................................                                              768,795
Other real estate owned................................                                                1,078
Investments in unconsolidated subsidiaries and
   associated companies................................                                              193,126
Customers' liability to this bank on acceptances
   outstanding.........................................                                              592,118
Intangible assets......................................
   Goodwill............................................                                            1,300,295
   Other intangible assets.............................                                              122,143
Other assets...........................................                                            3,676,375
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Total assets...........................................                                          $70,232,359
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LIABILITIES
Deposits:
   In domestic offices.................................                                          $25,962,242
   Noninterest-bearing.................................                                           10,586,346
   Interest-bearing....................................                                           15,395,896
   In foreign offices, Edge and Agreement
     subsidiaries, and IBFs............................                                           24,862,377
   Noninterest-bearing.................................                                              373,085
   Interest-bearing....................................                                           24,489,292
Federal funds purchased and securities sold under
   agreements to repurchase............................                                            1,446,874
Trading liabilities....................................                                            2,373,361
Other borrowed money:
   (includes mortgage indebtedness and obligations
   under capitalized leases).......                                                                1,381,512
Bank's liability on acceptances executed and
   outstanding.........................................                                              592,804
Subordinated notes and debentures......................                                            1,646,000
Other liabilities......................................                                            5,373,065
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Total liabilities......................................                                          $63,658,235
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EQUITY CAPITAL
Common stock...........................................                                            1,135,284
Surplus................................................                                            1,008,773
Retained earnings......................................                                            4,426,033
Accumulated other comprehensive income.........                                                        4,034
Other equity capital components.....................                                                       0
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Total equity capital...................................                                            6,574,124
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Total liabilities and equity capital...................                                          $70,232,359
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         I, Thomas J. Mastro, Senior Vice President and Comptroller of the
above-named bank do hereby declare that this Report of Condition has been
prepared in conformance with the instructions issued by the Board of Governors
of the Federal Reserve System and is true to the best of my knowledge and
belief.

                                                               Thomas J. Mastro,
                                           Senior Vice President and Comptroller

         We, the undersigned directors, attest to the correctness of this Report
of Condition and declare that it has been examined by us and to the best of our
knowledge and belief has been



prepared in conformance with the instructions issued by the Board of Governors
of the Federal Reserve System and is true and correct.


Thomas A. Renyi         )
Gerald L. Hassell       )         Directors
Alan R. Griffith        )


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