Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year Ended December 31, 2020
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
AXP	$	4,774,000	$	160,000	$	--	$	4,934,000
BioArchive		855,000		1,177,000		--		2,032,000
Manual Disposables		599,000		--		--		599,000
CAR-TXpress		1,471,000		71,000		286,000		1,828,000
Other		289,000		--		62,000		351,000
Total	$	7,988,000	$	1,408,000	$	348,000	$	9,744,000

	Year Ended December 31, 2019
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
AXP	$	7,313,000	$	209,000	$	--	$	7,522,000
BioArchive		1,472,000		1,438,000		--		2,910,000
Manual Disposables		977,000		--		--		977,000
CAR-TXpress		1,457,000		13,000		95,000		1,565,000
Other		--		22,000		51,000		73,000
Total	$	11,219,000	$	1,682,000	$	146,000	$	13,047,000

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

	2021		2022		2023		2024		2025		2026 and beyond		Total
Service revenue	$	1,235,000	$	674,000	$	412,000	$	151,000	$	85,000	$	--	$	2,557,000
Clinical revenue		13,000		13,000		13,000		14,000		13,000		150,000		216,000
Exclusivity fee		286,000		286,000		286,000		286,000		286,000		188,000		1,618,000
Total	$	1,534,000	$	973,000	$	711,000	$	451,000	$	384,000	$	338,000	$	4,391,000