Summary of Significant Accounting Policies (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Working capital	$ 9,600,000
Marketable debt securities, available for sale	1,639,000	$ 926,000
Adjustments to non cash adjustments to reduce inventory for excess, obsolete inventory or short-dated shelf-life inventory	68,000	168,000
Adjustments to reduce inventory for excess, obsolete or short-dated shelf-life inventory	167,000	360,824
Cash and cash equivalents	6,816,000	434,000
Bank balance	7,400,000
Amount of bank balance covered by federal depository insurance	500,000
Amount of bank balance uninsured	6,900,000
Allowance for bad debt
Net sales	14,514,000	9,876,000
Estimated sales returns, continuing operation	291,000	37,000
Estimated sales returns, discontinued operation		132,000
Deferred revenue	$ 331,000	214,000
Stock option exercisable period	7 years
Share-based compensation expense	$ 1,459,000	744,000
Research and development cost	633,000	332,000
Cooperative Incentive Promotion Costs [Member]
Estimated sales returns, continuing operation	463,000	92,000
Advertising and incentive promotion expenses, continuing operation	766,000	443,000
Advertising and incentive promotion expenses , discontinued operation		76,000
Estimated returns cooperative and incentive allowance costs	201,000
Consumer Products [Member]
Net sales	13,200,000	9,900,000
Diagnostic Services [Member]
Net sales	$ 1,300,000
Furniture and Fixtures [Member]
Property, plant and equipment, useful life	5 years
Minimum [Member] | Building and Improvements [Member]
Property, plant and equipment, useful life	10 years
Minimum [Member] | Machinery and Equipment [Member]
Property, plant and equipment, useful life	3 years
Minimum [Member] | Computer Equipment and Software [Member]
Property, plant and equipment, useful life	3 years
Maximum [Member] | Building and Improvements [Member]
Property, plant and equipment, useful life	39 years
Maximum [Member] | Machinery and Equipment [Member]
Property, plant and equipment, useful life	7 years
Maximum [Member] | Computer Equipment and Software [Member]
Property, plant and equipment, useful life	5 years
Marketable Securities [Member] | Minimum [Member]
Interest rate	0.85%
Marketable Securities [Member] | Maximum [Member]
Interest rate	3.35%