Schedule II - Valuation Accounts and Reserves

12 Months Ended

Dec. 31, 2012

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION ACCOUNTS AND RESERVES

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

SCHEDULE II - VALUATION ACCOUNTS AND RESERVES

(in thousands)

	Balance at 1-1-12		Provision for Doubtful Accounts		Net Deductions and Other			Balance at 12-31-12
Year Ended December 31, 2012
Doubtful accounts and allowances	$	237,339	$	268,615	$	270,207	(a)	$	235,747
	Balance at 1-1-11		Provision for Doubtful Accounts		Net Deductions and Other			Balance at 12-31-11
Year Ended December 31, 2011
Doubtful accounts and allowances	$	228,917	$	279,592	$	271,170	(a)	$	237,339
	Balance at 1-1-10		Provision for Doubtful Accounts		Net Deductions and Other			Balance at 12-31-10
Year Ended December 31, 2010
Doubtful accounts and allowances	$	238,206	$	291,737	$	301,026	(a)	$	228,917

(a) Primarily represents the write-off of accounts receivable, net of recoveries.