Other Agreements - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Agreements [Line Items]
Upfront consideration paid in exchange of common stock		5,587
Asset purchase agreement fixed payments paid for first two years		$ 740,000
Percentage on annual revenues for cash consideration to be paid		6.00%
Asset purchase agreement aggregate cash compensation paid		$ 15,000,000
Deferred payment obligation interest percentage		5.00%
Discount rate used to calculate asset purchase obligation		2.50%
Payments on obligation		$ 0	$ 1,206,250
Accretion of discount on NuvoGen obligation		281,013	187,017
Research and development		$ 4,601,718	3,075,204
Agreement expiration date		Oct. 31, 2019
Description on termination of agreement		The Company may terminate the agreement at any time upon 90 days’ written notice and may terminate any development plan under the agreement upon 30 days’ prior written notice. Illumina may terminate the agreement upon 30 days’ prior written notice if the Company undergoes certain changes of control or immediately if the Company fails to select a testing field for an IVD test kit within 24 months following the date of the agreement. Either party may terminate the agreement upon the other party’s material breach of the agreement that remains uncured for 30 days, or upon the other party’s bankruptcy.
Illumina, Inc. Agreement
Other Agreements [Line Items]
Aggregate payment upon achievement of specified regulatory milestones		$ 1,000,000
Research and development		100,000
Invetech PTY Ltd. Agreement
Other Agreements [Line Items]
Research and development		325,000
Invetech PTY Ltd. Agreement | Scenario Forecast
Other Agreements [Line Items]
Milestone payments due	$ 1,500,000
Growth Term Loan
Other Agreements [Line Items]
Minimum payments of pledged intangible assets due in 2014		868,750
Minimum payments of pledged intangible assets due in 2015		868,750
Minimum payments of pledged intangible assets due in first quarter of 2016		868,750
Minimum payments of pledged intangible assets due in second quarter of 2016		0
NuvoGen Asset Purchase Agreement
Other Agreements [Line Items]
Asset purchase agreement quarterly installments due in current year		543,750
Asset purchase agreement quarterly installments due in 2017		800,000
NuvoGen
Other Agreements [Line Items]
Convertible notes and related debt discount		$ 283,621	$ 564,634
Minimum | Invetech PTY Ltd. Agreement
Other Agreements [Line Items]
Anticipated agreement completion period of its start date		112 days
Minimum | NuvoGen Asset Purchase Agreement
Other Agreements [Line Items]
Asset purchase agreement quarterly installments due from beginning 2018		$ 400,000
Maximum | Invetech PTY Ltd. Agreement
Other Agreements [Line Items]
Anticipated agreement completion period of its start date		140 days