Revenue from contracts with customers

3 Months Ended

Mar. 31, 2019

Revenue From Contract With Customer [Abstract]

Revenue from contracts with customers

Note 4 – Revenue from contracts with customers

Disaggregated revenue

The Company provides diagnostic test products, laboratory services to hospitals, clinical laboratories and other healthcare provider customers, and enters into collaboration agreements with government agencies and healthcare providers. The revenues by type of service consist of the following:

	Three Months Ended March 31,
	2019		2018
Product sales	$	520,177	$	633,496
Laboratory services		—		8,690
Collaboration revenue		500,000		204,040
Total revenue	$	1,020,177	$	846,226

Deferred revenue

Changes in deferred revenue for the period were as follows:

Balance at December 31, 2018	$	15,824
Revenue recognized in the current period from the amounts in the beginning balance		(5,831	)
New deferrals, net of amounts recognized in the current period		—
Balance at March 31, 2019	$	9,993

Contract assets

The Company had no contract assets as of March 31, 2019, which are generated when contractual billing schedules differ from revenue recognition timing. Contract assets represent a conditional right to consideration for satisfied performance obligations that becomes a billed receivable when the conditions are satisfied.

Unsatisfied performance obligations

Remaining contract consideration for which revenue has not been recognized due to unsatisfied performance obligations was $1,075,000 at March 31, 2019, which the Company expects to recognize over the next nine months.