Summary of Significant Accounting Policies- Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Deferred revenue	$ 3,000,000		$ 3,000,000		$ 3,800,000
Sales commissions	59,000	81,000	160,000	318,000
Percentage of cash discount offered to customers			2.00%
Deferred tax assets, valuation allowance	29,900,000		29,900,000
Inventory Raw Materials	158,490		158,490		180,948
Debt Conversion, Original Debt, Amount			14,300,000
Construction in Progress, Gross	0		0		526,000
Federal R&D Tax Credit [Member]
Significant Accounting Policies [Line Items]
Deferred Tax Assets, Gross					61,000
Fulfillment Center [Member]
Significant Accounting Policies [Line Items]
Inventory Raw Materials	35,000		35,000		41,000
Genetic Test Revenue [Member]
Significant Accounting Policies [Line Items]
Breakage Revenue	85,519		242,380
Customer Payment [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	500,000		500,000
Kits Components [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	1,500,000		1,500,000
Distributors [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	$ 1,000,000		$ 1,000,000