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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 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 June 30,												Six Months Ended June 30,
						2022						2021						2022						2021
Medicare Advantage						23		%				13		%				19		%				12		%
Medicare						19		%				19		%				20		%				19		%
Aetna						11		%				*						*						*
Blue Shield						*						11		%				*						11		%

* Less than 10%.

												Accounts Receivable, Net
												June 30, 2022						December 31, 2021
United Healthcare															13		%							18		%
Medicare												13		%				*
Medicare Advantage												11		%				*
Aetna												10		%				*
Blue Shield												*						19		%

* Less than 10%.

Disaggregation of Revenue

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

 

						Three Months Ended June 30,												Six Months Ended June 30,
						2022						2021						2022						2021
Revenue:
Healthcare insurers						$	5,286					$	7,381					$	11,709					$	13,408
Government						1,689						2,394						3,809						4,403
Client(1)						1,785						2,427						3,376						4,392
Other(2)						202						270						462						556
Janssen (SIMPONI®)						—						300						—						600
Total revenue						$	8,962					$	12,772					$	19,356					$	23,359

(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):

 

												June 30, 2022						December 31, 2021
Cash and cash equivalents												$	76,387					$	99,442
Restricted cash												100						100
												$	76,487					$	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):

 

												June 30, 2022						December 31, 2021
Cash and cash equivalents												$	76,387					$	99,442
Restricted cash												100						100
												$	76,487					$	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):

 

						June 30,
						2022						2021
Warrants to purchase common stock						409,108						426,827
Common stock options						1,949,374						2,123,617
Restricted stock units						784,940						375,525
Employee stock purchase plan						30,303						12,525
Total						3,173,725						2,938,494

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