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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1022079	Quest Diagnostics Inc	DGX	Services-Medical Laboratories (8071)	161387862

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1222679	E Michael Prevoznik	C/O Quest Diagnostics Incorporated 3 Giralda Farms Madison NJ 07940	Svp & General Counsel	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2011-02-11	18,457	$57.19	38,153	No	4	S	Direct
Common Stock	Disposition	2011-02-15	1,540	$57.17	36,694	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,334	Indirect	401k/SDCP

Footnotes

The sale reported was effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person on February 7, 2011.
The amount includes exempt purchases made under the Company's stock purchase plan.
The amount includes approximately 81 shares acquired via dividend reinvestment during 2010 pursuant to a dividend reinvestment plan, sponsored by a broker-dealer, that essentially mirrors a dividend reinvestment plan sponsored by the registrant.
These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) and/or Supplemental Deferred Compensation Plan. The information was obtained from the plan administrator as of a current date. The number of shares is based on the account balance of the Company stock fund under each Plan (which includes some money market instruments) divided by the market price of the Company stock as of that date.