Note 8 - Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Testing	$	5,859	$	4,590	$	16,275	$	14,363
Shipping/Collection (hair)		774		562		2,069		1,576
Other		40		22		129		86
Total Revenue	$	6,673	$	5,174	$	18,473	$	16,025