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                               FORM 8-B

                  SECURITIES AND EXCHANGE COMMISSION
                        Washington, D.C. 20549

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        Registration of Securities of Certain Successor Issuers
             Filed Pursuant to Section 12(b) or (g) of the
                    Securities Exchange Act of 1934


              NATIONAL HEALTH LABORATORIES HOLDINGS INC.
        (Exact name of registrant as specified in its charter)


                 Delaware                     13-3757370        
     (State or other jurisdiction          (I.R.S. Employer
          of incorporation or           Identification Number)
             organization)


              4225 Executive Square
                   Suite 805
              La Jolla, California                   92037  
     (Address of principal executive offices)     (Zip Code)


     Securities to be registered pursuant to Section 12(b) of the
     Act:

     Title of each class to be so   Name of each exchange on
     registered:                    which each class is to be
                                    registered:

          Common Stock, par value        New York Stock Exchange
          $.01 per share


     Securities to be registered pursuant to Section 12(g) of the
     Act:

          None.

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            INFORMATION REQUIRED IN REGISTRATION STATEMENT

     Item 1.  General Information.

               National Health Laboratories Holdings Inc. (the
     "Registrant") was incorporated as a corporation under the
     laws of the State of Delaware on March 8, 1994.  The
     Registrant's fiscal year ends on December 31 of each year.


     Item 2.   Transaction of Succession.

               The predecessor corporation to the Registrant was
     National Health Laboratories Incorporated, a Delaware
     corporation ("NHL").  The common stock of NHL, par value
     $.01 per share, was registered pursuant to Section 12(b) of
     the Securities Exchange Act of 1934, as amended (the
     "Exchange Act").

               The Registrant acquired all the outstanding common
     stock of NHL as part of a corporate restructuring whereby
     one share of common stock of the Registrant, par value $.01
     per share, was exchanged for each outstanding share of NHL
     common stock.  See "Proposed Reorganization" in the Proxy
     Statement/Prospectus of NHL, dated April 26, 1994, and
     Exhibit A thereto, "Agreement and Plan of Merger",
     incorporated herein by reference pursuant to General
     Instruction A(b) to this Form 8-B.  

     Item 3.   Securities to be Registered.

               The Registrant has authorized 220,000,000 shares
     of common stock, of which on June 27, 1994: (i) 84,753,192
     were issued to persons other than the Registrant and (ii)
     none were held by or for the account of the Registrant.

     Item 4.   Description of Registrant's Securities to be
               Registered.

               For a description of Registrant's common stock,
     see the information set forth under the captions "Proposed
     Reorganization--New York Stock Exchange Listing";
     "--Dividends"; and "--Description of NHL Holdings' Capital
     Stock" on pages 8-9 of the Proxy Statement/Prospectus
     included in Amendment No. 1 to the Registrant's Registration
     Statement on Form S-4 (Registation No. 33-52655) (the
     "Registration Statement") filed with the Securities and



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     Exchange Commission on April 20, 1994.  Such information is
     incorporated herein by reference.



     Item 5.   Financial Statements and Exhibits.

               (a)  Financial Statements.
                    None

               (b)  Exhibits.

     Number    Description of Document             Page Number

     2         Proxy Statement/Prospectus dated
               April 26, 1994 (including as
               Exhibit A thereto, the Agreement
               and Plan of Merger dated as of
               April 15, 1994, among the
               Registrant, NHL and NHL Sub
               Acquisition Corp.) (incorporated
               herein by reference to the
               Registration Statement)

     3.1       Certificate of Incorporation of
               the Registrant (incorporated
               herein by reference to
               Exhibit 3.1 to the Registration
               Statement)

     3.2       By-laws of the Registrant
               (incorporated herein by reference
               to Exhibit 3.2 to the
               Registration Statement)

     21        Subsidiaries of the Registrant



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                               SIGNATURE

               Pursuant to the requirements of Section 12 of the
     Securities Exchange Act of 1934, the Registrant has duly
     caused this registration statement to be signed on its
     behalf by the undersigned, thereunto duly authorized.

                              NATIONAL HEALTH LABORATORIES
                              HOLDINGS INC.,

                                by   /s/  Michael L. Jeub
                                    ______________________________
                                    Name: Michael L. Jeub 
                                    Title: Executive Vice President,
                                           Chief Financial Officer &
                                           Treasurer

     Date:  June 30, 1994



 


                                                       EXHIBIT 21


              NATIONAL HEALTH LABORATORIES HOLDINGS INC.
                             SUBSIDIARIES
                         (as of June 29, 1994)




                                               Jurisdiction    Percentage
                 Subsidiary Name             of Incorporation  Ownership
      NHL Intermediate Holdings Corp. I .    Delaware             100%

      NHL Intermediate Holdings Corp. II     Delaware             100%

      National Health Laboratories
        Incorporated  . . . . . . . . . .    Delaware             100%
      La Jolla Management Corp. . . . . .    Delaware             100%

      Quality Assurance Group, Inc. . . .    Delaware             100%

      Executive Tower Travel Inc. . . . .    Delaware             100%
      Allied Clinical Laboratories, Inc., 
        A Delaware corporation  . . . . .    Delaware             100%

      Allied Clinical Laboratories, Inc.,
        An Oregon Corporation . . . . . .    Oregon               100%

      Reference Pathology Laboratory, Inc.   Delaware             100%

      Physicians Clinical Laboratories,
        Inc.  . . . . . . . . . . . . . .    Illinois             100%

      Sierra Nevada Laboratories, Inc.  .    Nevada               100%

      Suburban Pathology Associates, Inc.    Delaware             100%

      Nevada Genetics . . . . . . . . . .    Nevada               100%