Summary of Significant Accounting Policies- Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Deferred revenue	$ 3,000,000		$ 3,000,000		$ 3,200,000
Sales commissions	80,000	$ 59,000	$ 168,000	$ 101,000
Percentage of cash discount offered to customers			2.00%
Deferred tax assets, valuation allowance	33,400,000		$ 33,400,000
Inventory Raw Materials	150,123		150,123		163,239
Convertible Debt	14,300,000		14,300,000
Fulfillment Center [Member]
Significant Accounting Policies [Line Items]
Inventory Raw Materials					$ 48,000
Payments To Acquire of Inventory			33,000
Genetic Test Revenue [Member]
Significant Accounting Policies [Line Items]
Breakage Revenue	52,305	$ 92,364	128,205	$ 156,861
Customer Payment [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	500,000		500,000
Kits Components [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	2,900,000		2,900,000
Distributors [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	$ 2,400,000		$ 2,400,000