Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Schedule of ResponseDX Accounts Receivable

ResponseDX^® accounts receivable as of December 31, 2012 and September 30, 2013, consisted of the following:

	December 31, 2012		September 30, 2013
			(Unaudited)
Net Medicare receivable	$	890,936	$	2,185,721
Net Private Payor receivable		2,924,412		3,590,552
		3,815,348		5,776,273
Allowance for doubtful accounts		(991,990)		(1,159,756)
Total	$	2,823,358	$	4,616,517

Schedule of Estimated Useful Lives of Property and Equipment

The Company has determined the estimated useful lives of its property and equipment, as follows:

Laboratory equipment	5 to 7 years
Furniture and Equipment	3 to 7 years
Leasehold Improvements	Shorter of the useful life (5 to 7 years) or the lease term

Schedule of ResponseDX Revenue

The following details ResponseDX^® revenue for the periods indicated:

	Three Months				Nine Months
	Ended September 30,				Ended September 30,
	(Unaudited)				(Unaudited)
	2012		2013		2012		2013
Net Medicare revenue	$	1,227,893	$	956,716	$	3,995,200	$	3,379,405
Net Private Payor revenue		1,795,723		1,584,796		4,814,403		5,450,682
Net ResponseDX® revenue	$	3,023,616	$	2,541,512	$	8,809,603	$	8,830,087

Schedule of Revenue Sources that Account for Greater than 10 Percent of Total Revenue

Revenue sources that account for greater than 10 percent of total revenue are provided below.

	Three Months Ended September 30,										Nine Months Ended September 30,
	2012					2013					2012					2013
	(Unaudited)										(Unaudited)
	Revenue		Percent of Total Revenue			Revenue		Percent of Total Revenue			Revenue		Percent of Total Revenue			Revenue		Percent of Total Revenue
GlaxoSmithKline, LLC and GlaxoSmithKline Biologicals S.A.	$	1,664,515		31	%	$	710,335		17	%	$	2,619,519		20	%	$	3,745,894		25	%
Medicare, net of contractual allowances	$	1,227,893		23	%	$	956,716		23	%	$	3,995,200		30	%	$	3,379,405		23	%

Schedule of Customers that Account for Greater than 10 Percent of Accounts Receivable

Customers that account for greater than 10 percent of gross accounts receivable are provided below.

	As of December 31, 2012					As of September 30, 2013
						(Unaudited)
	Receivable Balance		Percent of Total Receivables			Receivable Balance		Percent of Total Receivables
GlaxoSmithKline, LLC and GlaxoSmithKline Biologicals S.A.	$	1,691,144		27	%	$	1,380,374		19	%
Medicare, net of contractual allowances	$	890,936		14	%	$	2,185,721		30	%