Note 1 - Summary of Significant Accounting Policies (Details Textual)				1 Months Ended							3 Months Ended	12 Months Ended		202 Months Ended
	Mar. 12, 2019 USD ($)	Feb. 06, 2019 USD ($)	Jan. 08, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) $ / shares shares	Nov. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jan. 31, 2018 USD ($)	Nov. 30, 2017 USD ($)	Jan. 31, 2017 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Mar. 22, 2019 $ / shares	Jul. 11, 2018 $ / shares	Jul. 10, 2018 $ / shares	Mar. 31, 2018	Feb. 21, 2018 $ / shares	Dec. 28, 2017 $ / shares	Apr. 19, 2017 $ / shares
Common Stock, Shares, Outstanding, Ending Balance | shares					14,091,748							14,091,748	6,943,283	14,091,748
Common Stock, Par or Stated Value Per Share | $ / shares					$ 0.01							$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Retained Earnings (Accumulated Deficit), Ending Balance					$ (63,107,945)							$ (63,107,945)	$ (53,021,469)	$ (63,107,945)
Net Cash Provided by (Used in) Operating Activities, Per Month												441,000
Cash and Cash Equivalents, at Carrying Value, Ending Balance					162,152							162,152	766,189	162,152
Stockholders' Equity, Period Increase (Decrease), Total														36,490,000
Debt Instrument, Increase (Decrease), Net, Total														7,870,000
Advertising Expense												43,548	37,060
Research and Development Expense, Total												$ 526,000	289,000
Maintenance Plan, Service Requirement, Period Subsequent to One Year Anniversary of Invoice												1 year
Depreciation, Total												$ 84,995	58,872
Amortization of Intangible Assets, Total												62,633	12,689
Unrecognized Tax Benefits, Ending Balance					0							0		0
Cash, Uninsured Amount					0							0		$ 0
Product Warranty Expense												$ 10,682	$ 6,209
Number of Operating Segments												2
Maintenance [Member]
Revenue, Performance Obligation, Timing												1 year
Minimum [Member]
Standard Payment Term for Customers												30 days
Maximum [Member]
Standard Payment Term for Customers												60 days
Chief Executive Officer [Member]
Proceeds from Related Party Debt					$ 370,000	$ 370,000
Convertible Promissory Note [Member]
Proceeds from Debt, Net of Issuance Costs							$ 1,815,000
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share | $ / shares															$ 0.01
Subsequent Event [Member] | Chief Executive Officer [Member]
Proceeds from Related Party Debt	$ 1,300,000	$ 300,000	$ 950,000								$ 1,300,000
Shelf Registration [Member] | Subsequent Event [Member]
Proceeds from Issuance or Sale of Equity, Total				$ 1,100,000							2,100,000
Additional Gross Proceeds From Sale of Equity, Available to Raise				$ 1,700,000							1,700,000
Stock Issuance Plan, Additional Available Amount											$ 6,400,000
IPO [Member]
Proceeds from Issuance or Sale of Equity, Total										$ 3,937,500
Private Placement [Member] | Series C Convertible Preferred Stock [Member]
Proceeds from Issuance or Sale of Equity, Total									$ 1,300,000
The 2018 Public Offering [Member]
Proceeds from Issuance or Sale of Equity, Total								$ 2,755,000
Helomics Holding Corp. [Member]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage																		25.00%