Revenue (Tables)

9 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables set forth total revenue by type of service for the periods presented:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2022		2021		2022
Screening services	$	168,372	$	197,870	$	463,763	$	591,900
Other services	1,185		1,429		4,492		4,962
Total revenue	$	169,557	$	199,299	$	468,255	$	596,862

Revenue from External Customers by Geographic Areas

The following table sets forth total revenue by geographic area in which the revenues and invoicing are recorded for the periods presented:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2022		2021		2022
United States	$	139,434	$	168,615	$	378,918	$	502,047
All other countries	30,123		30,684		89,337		94,815
Total revenue	$	169,557	$	199,299	$	468,255	$	596,862