Exhibit 25.1



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

                                  -------------

                                 Debt Securities
                       (Title of the indenture securities)


================================================================================





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.

- --------------------------------------------------------------------------------
                  Name                                        Address
- --------------------------------------------------------------------------------

        Superintendent of Banks of the State of    2 Rector Street,
        New York                                   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 Corporation      Washington, D.C. 20429

        New York Clearing House Association        New York, New York 10005

        (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.

                                      -2-


                                    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 27th day of November, 2001.


                                           THE BANK OF NEW YORK



                                           By:       /s/  STACEY POINDEXTER
                                               ---------------------------------
                                               Name:       STACEY POINDEXTER
                                               Title:      ASSISTANT TREASURER




                                                                       EXHIBIT 7
                                                                       ---------

- --------------------------------------------------------------------------------


                       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
ASSETS                                                             In Thousands

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
                                                                    -----------
Total assets...........................................             $70,232,359
                                                                    ===========




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
                                                                    -----------

Total liabilities......................................             $63,658,235
                                                                    ===========

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
- --------------------------------------------------------------------------------
Total equity capital...................................               6,574,124
                                                                    -----------
Total liabilities and equity capital...................             $70,232,359
                                                                    ===========



         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                )

- --------------------------------------------------------------------------------