Note 2 - Discontinued Operations - Schedule of Disposal Groups Including Discontinued Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Total current assets of discontinued operations	$ 77,726		$ 77,726		$ 79,249
Total assets of discontinued operations	0		0		902,665
Total current liabilities of discontinued operations	207,644		207,644		174,839
Net (loss) from discontinued operations	(811,277)	$ (415,083)	(1,735,451)	$ (1,483,222)
Birmingham Laboratory [Member] | Discontinued Operations, Disposed of by Sale [Member]
Revenue	968	38,430	32,790	136,959
Accounts receivable	58,759		58,759		56,056
Inventories	0		0		13,571
Cost of sales	1,503	9,072	3,295	19,379
Prepaid expense and other assets	18,967		18,967		9,622
Total current assets of discontinued operations	77,726		77,726		79,249
Gross profit (loss) from discontinued operations	(535)	29,358	29,495	117,580
Property and equipment, net	0		0		742,696
Intangibles, net	0		0		11,118
Lease right-of-use assets	0		0		130,264
General and administrative expense	291,944	238,953	804,098	800,760
Other long-term assets	0		0		18,587
Total assets of discontinued operations	77,726		77,726		981,914
Operations expense	55,671	203,883	495,741	614,165
Accounts payable	12,556		12,556		7,964
Sales and marketing expense	0	1,605	1,980	22,972
Accrued expenses and other liabilities	116,118		116,118		94,345
Lease liability	78,970		78,970		72,530
Loss on impairment of property and equipment	0	0	0	162,905
Total current liabilities of discontinued operations	207,644		207,644		174,839
Lease liability – net of current portion	0		0		58,002
Total operating expenses	347,615	444,441	1,301,819	1,600,802
Total liabilities	207,644		207,644		$ 232,841
Total operating (loss) from discontinued operations	(348,150)	(415,083)	(1,272,324)	(1,483,222)
Loss on disposal of discontinued operations	(463,127)	0	(463,127)	0
Net (loss) from discontinued operations	$ (811,277)	$ (415,083)	$ (1,735,451)	$ (1,483,222)