Revenue from Contracts with Customers - Schedule of Changes in Contract Liability (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disaggregation Of Revenue [Line Items]
Beginning Balance	$ 410,947	$ 837,885
Deferral of revenue	1,262,124	724,750
Recognition of deferred revenue	(1,109,443)	(1,174,660)
Ending Balance	563,628	387,975
Product Revenue
Disaggregation Of Revenue [Line Items]
Beginning Balance	116,547	39,426
Deferral of revenue	126,425	151,461
Recognition of deferred revenue	(172,610)	(135,980)
Ending Balance	70,362	54,907
Custom RUO Assay Design
Disaggregation Of Revenue [Line Items]
Beginning Balance	50,000	197,606
Deferral of revenue	671,885	336,080
Recognition of deferred revenue	(707,641)	(453,768)
Ending Balance	14,244	79,918
Sample Processing
Disaggregation Of Revenue [Line Items]
Beginning Balance	244,400	490,536
Deferral of revenue	463,814	166,291
Recognition of deferred revenue	(229,192)	(403,677)
Ending Balance	$ 479,022	253,150
Collaborative Development Services
Disaggregation Of Revenue [Line Items]
Beginning Balance		110,317
Deferral of revenue		70,918
Recognition of deferred revenue		$ (181,235)