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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	2012-02-16	1,462	$57.38	31,656	No	4	S	Direct

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,371	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.
This transaction was executed in multiple trades at prices ranging from $57.37 to $57.38. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
The amount includes exempt purchases made under the Company's stock purchase plan.
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 obtain from the plan administrator as of a recent date. The number of shares is based on the account balance of the Company stock fund under the plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date.