8-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of Earliest Event Reported): July 31, 2006

Commission file number 001-12215

Quest Diagnostics Incorporated

1290 Wall Street West

Lyndhurst, NJ 07071

(201) 393-5000

Delaware

(State of Incorporation)

16-1387862

(I.R.S. Employer Identification Number)

Item 1.01. Entry into a Material Definitive Agreement

On July 31, 2006, Quest Diagnostics Incorporated (the “Company”), and Focus Technologies Holding Company and Focus Diagnostics, Inc. (collectively, the “Additional Subsidiary Guarantors”), certain of the Company’s subsidiaries and The Bank of New York, as Trustee, entered into the Eighth Supplemental Indenture. The Eighth Supplemental Indenture supplements the indenture dated as of June 27, 2001 among the guarantors (as defined therein) and the Trustee, as subsequently supplemented by a first supplemental indenture, dated as of June 27, 2001, as further supplemented by a second supplemental indenture, dated as of November 26, 2001, as further supplemented by a third supplemental indenture, dated as of April 4, 2002, as further supplemented by a fourth supplemental indenture, dated as of March 19, 2003, as further supplemented by a fifth supplemental indenture, dated as of April 16, 2004, as further supplemented by a sixth supplemental indenture dated October 31, 2005, and as further supplemented by a seventh supplemental indenture dated November 21, 2005 (collectively, the “Indenture”).

The Eighth Supplemental Indenture adds the Additional Subsidiary Guarantors, which became subsidiaries of the Company on July 3, 2006, as guarantors to the Company’s 7½% Senior Notes due 2011, 5.125% Senior Notes due 2010 and 5.45% Senior Notes due 2015 issued pursuant to the Indenture. The Eighth Supplemental Indenture is attached hereto as exhibit 4.1.

Item 9.01. Financial Statements and Exhibits

c.	Exhibits
	4.1	Eighth Supplemental Indenture, dated as of July 31, 2006, among the Company, the guarantors named therein and The Bank of New York, as Trustee.

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Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

August 2, 2006
QUEST DIAGNOSTICS INCORPORATED
By:	/s/ Leo C. Farrenkopf, Jr.
	Leo C. Farrenkopf, Jr. Vice President and Assistant Secretary

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EX-4

Exhibit 4.1

EIGHTH SUPPLEMENTAL INDENTURE

SUPPLEMENTAL INDENTURE dated as of July 31, 2006 (this “Eighth Supplemental Indenture”), among FOCUS TECHNOLOGIES HOLDING COMPANY, and FOCUS DIAGNOSTICS, INC., each a Delaware corporation, (collectively, the “Additional Subsidiary Guarantors”), QUEST DIAGNOSTICS INCORPORATED, a Delaware corporation (the “Company”), THE BANK OF NEW YORK, a New York banking corporation as Trustee (the “Trustee”), and the Subsidiary Guarantors (as defined in the Indenture referred to herein).

RECITALS OF THE COMPANY

WHEREAS, the Company, the Trustee and the Initial Subsidiary Guarantors (as hereinafter defined) executed and delivered an Indenture, dated as of June 27, 2001 (the “Base Indenture”), as supplemented by the first supplemental indenture, dated as of June 27, 2001, among the Company, the Initial Subsidiary Guarantors (as defined therein) party thereto, and the Trustee, as further supplemented by a second supplemental indenture, dated as of November 26, 2001, among the Company, the Subsidiary Guarantors (as defined therein) party thereto and the Trustee, as further supplemented by a third supplemental indenture, dated as of April 4, 2002, among the Company, the additional Subsidiary Guarantors (as defined therein) party thereto and the Trustee, as further supplemented by a fourth supplemental indenture, dated as of March 19, 2003, among the Company, the additional Subsidiary Guarantors (as defined therein) party thereto and the Trustee, as further supplemented by a fifth supplemental indenture, dated as of April 16, 2004, among the Company, the additional Subsidiary Guarantor (as defined therein) party thereto and the Trustee, as further supplemented by a sixth supplemental indenture dated October 31, 2005, among the Company, the Subsidiary Guarantors (as defined therein) party thereto, as further supplemented by a seventh supplemental indenture dated November 21, 2005, among the Company, the additional Subsidiary Guarantors (as defined therein) parties thereto and the Trustee, and to be further supplemented by this Eighth Supplemental Indenture (collectively, the “Indenture”), to provide for the issuance by the Company from time to time of Securities to be issued in one or mores series as provided in the Indenture;

WHEREAS, the Additional Subsidiary Guarantors intend to guarantee the Securities under the Indenture and the issuance of guarantees has been authorized by resolutions adopted by the Boards of Directors and/or Managers, as applicable, of such Additional Subsidiary Guarantors;

WHEREAS, Sections 901(1) and 901(11) of the Indenture provide that without the consent of Holders of the Securities of any series issued under the Indenture, the Company and the Subsidiary Guarantors, when authorized by a Board Resolution, and the Trustee may enter into one or more indentures supplemental to the Indenture to (a) evidence the successor of another Person to any Subsidiary Guarantor and the assumption by such successor of the covenants of such Subsidiary Guarantor in the Indenture and in the Securities and (b) add a guarantor or guarantors for any series or all series of the Securities;

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WHEREAS, pursuant to Sections 904, 1601, 1602 and 1604 of the Indenture, by delivery of a Supplemental Indenture to the Trustee in accordance with the terms of the Indenture, each Person that becomes a Subsidiary Guarantor after the date of the Base Indenture will be deemed to have executed and delivered the Subsidiary Guarantee for the benefit of the Holder of the Security upon which the Subsidiary Guarantee is endorsed, with the same effect as if such Subsidiary Guarantor had been named thereon and had executed and delivered the Subsidiary Guarantee; and

WHEREAS, all things necessary to make this Eighth Supplemental Indenture a valid supplement to the Indenture according to its terms and the terms of the Indenture have been done;

NOW, THEREFORE, for and in consideration of the foregoing, the parties hereto hereby enter into this Eighth Supplemental Indenture, for the equal and proportionate benefit of all Holders of the Securities, as follows:

SECTION 1  Certain Terms Defined in the Indenture.

All capitalized terms used but not defined herein shall have the meanings assigned to them in the Indenture.

SECTION 2  Agreement to Guarantee.

The Additional Subsidiary Guarantors, by their signatures below, agree to become Additional Subsidiary Guarantors under the Indenture with the same force and effect as if originally named therein as Subsidiary Guarantors. The Additional Subsidiary Guarantors hereby agree to all the terms and provisions of the Indenture applicable to them as Additional Subsidiary Guarantors thereunder and each reference to a “Subsidiary Guarantor” in the Indenture shall be deemed to include the Additional Subsidiary Guarantors.

SECTION 3  Indenture Remains in Full Force and Effect.

Except as expressly supplemented by this Eighth Supplemental Indenture, the Indenture shall remain in full force and effect in accordance with its terms.

SECTION 4  New York Law to Govern.

THIS EIGHTH SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS.

SECTION 5  Separability.

In case any one or more of the provisions contained in this Eighth Supplemental Indenture should be held invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein and in the Indenture shall not in any way be affected or impaired. The parties hereto shall endeavor in good faith negotiations to replace any invalid, illegal or enforceable provisions herein with valid provisions, the economic

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effect of which comes as close as possible to that of the invalid, illegal or unenforceable provisions.

SECTION 6  May be Executed in Counterparts.

This Eighth Supplemental Indenture may be executed in counterparts, each of which when taken together shall constitute one and the same instrument. This Eighth Supplemental Indenture shall become effective when the Trustee shall have received a counterpart thereof that bears the signatures of each of the Additional Subsidiary Guarantors.

SECTION 7  Trustee.

The Trustee makes no representations as to the validity or sufficiency of this Eighth Supplemental Indenture. The recitals and statements herein are deemed to be those of the Company and the Additional Subsidiary Guarantors and not of the Trustee.

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IN WITNESS WHEREOF, the Company, the Additional Subsidiary Guarantors and the Trustee have duly executed this Eighth Supplemental Indenture as of the day and year first above written.

QUEST DIAGNOSTICS INCORPORATED
By:	/s/ Joseph P. Manory
	Name: Joseph P. Manory Title: Vice President and Treasurer

FOCUS TECHNOLOGIES HOLDING COMPANY
FOCUS DIAGNOSTICS, INC., as Additional Subsidiary Guarantors
By:	/s/ Joseph P. Manory
	Name: Joseph P. Manory Title: Vice President and Treasurer

THE BANK OF NEW YORK, as Trustee
By:	/s/ Robert A. Massimillo
	Name: Robert A. Massimillo Title: Vice President