Revenue from Contracts with Customers - Schedule of Changes in Contract Liability (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Beginning Balance	$ 599,454	$ 410,947
Deferral of revenue	678,593	1,055,701
Recognition of deferred revenue	(731,875)	(711,205)
Ending Balance	546,172	755,443
Product Revenue
Disaggregation Of Revenue [Line Items]
Beginning Balance	95,148	116,547
Deferral of revenue	273,829	113,038
Recognition of deferred revenue	(272,653)	(101,419)
Ending Balance	96,324	128,166
Custom RUO Assay Design
Disaggregation Of Revenue [Line Items]
Beginning Balance	66,216	50,000
Deferral of revenue	337,035	466,885
Recognition of deferred revenue	(403,251)	(424,434)
Ending Balance		92,451
Sample Processing
Disaggregation Of Revenue [Line Items]
Beginning Balance	438,090	244,400
Deferral of revenue	67,729	475,778
Recognition of deferred revenue	(55,971)	(185,352)
Ending Balance	$ 449,848	$ 534,826