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Summary of Significant Accounting Policies - (Tables)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Schedule of Concentration of Risk, by Risk Factor and Significant Payer

For each significant payor and customer, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable are as follows:

 

						Revenue
						Three Months Ended March 31,
						2022						2021
Medicare						20		%				18		%
Medicare Advantage						15		%				12		%
Blue Shield						13		%				12		%

												Accounts Receivable
												March 31, 2022						December 31, 2021
United Healthcare															20		%							18		%
Blue Shield												19		%				19		%

Disaggregation of Revenue

The following table includes the Company's revenues as disaggregated by payor and customer category (in thousands):

 

						Three Months Ended March 31,
						2022						2021
Revenue:
Healthcare insurers						$	6,423					$	6,027
Government						2,120						2,009
Client(1)						1,591						1,965
Other(2)						260						286
Janssen (SIMPONI®)						—						300
Total revenue						$	10,394					$	10,587

(1)Includes hospitals, other laboratories, etc.

(2)Includes patient self-pay.

Schedule of Restricted Cash and Cash Equivalents

Cash, cash equivalents and restricted cash presented in the accompanying condensed statements of cash flows consist of the following (in thousands):

 

												March 31, 2022						December 31, 2021
Cash and cash equivalents												$	89,751					$	99,442
Restricted cash												100						100
												$	89,851					$	99,542

Schedule of Cash and Cash Equivalents

Cash, cash equivalents and restricted cash presented in the accompanying condensed statements of cash flows consist of the following (in thousands):

 

												March 31, 2022						December 31, 2021
Cash and cash equivalents												$	89,751					$	99,442
Restricted cash												100						100
												$	89,851					$	99,542

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares):

 

						Three Months Ended March 31,
						2022						2021
Warrants to purchase common stock						409,108						426,827
Common stock options						2,002,039						2,041,580
Restricted stock units						878,575						185,000
Employee stock purchase plan						6,929						2,869
Total						3,296,651						2,656,276

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