Note 3 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended March 31, 2021
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
AXP	$	225,000	$	39,000	$	--	$	264,000
BioArchive		208,000		542,000		--		750,000
CAR-TXpress		255,000		28,000		71,000		354,000
Manual Disposables		129,000		--		--		129,000
Other		7,000		--		13,000		20,000
Total	$	824,000	$	609,000	$	84,000	$	1,517,000

	Three Months Ended March 31, 2020
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
AXP	$	2,208,000	$	24,000	$	--	$	2,232,000
BioArchive		164,000		332,000		--		496,000
CAR-TXpress		152,000		12,000		71,000		235,000
Manual Disposables		203,000		--		--		203,000
Other		14,000		--		20,000		34,000
Total	$	2,741,000	$	368,000	$	91,000	$	3,200,000

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

	Remainder of 2021		2022		2023		2024		2025 and beyond		Total
Service revenue	$	1,013,000	$	804,000	$	412,000	$	152,000	$	85,000	$	2,466,000
Clinical revenue		10,000		13,000		13,000		13,000		162,000		211,000
Exclusivity fee		214,000		286,000		286,000		286,000		476,000		1,548,000
Total	$	1,237,000	$	1,103,000	$	711,000	$	451,000	$	723,000	$	4,225,000