Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 765,975	$ 1,516,272
Accounts receivable, net	1,289,538	1,710,665
Prepaid expenses and other current assets	707,011	519,063
Inventories, net	1,722,825	1,620,509
Advances on contracts	775,833	710,662
Total current assets	5,261,182	6,093,148
Furniture, fixtures and equipment, net	29,961	44,976
Patents, net	369,007	382,260
Right of use asset	649,425	15,924
Other assets	24,150	35,905
Total assets	6,374,601	6,556,289
Current liabilities:
Accounts payable	1,443,742	1,379,425
Accounts payable, related party	1,389,319	1,358,752
Accrued expenses and other payables	832,329	775,055
Accrued expenses, related party	1,162,607	1,057,957
Lease liabilities, current	65,034	15,924
Deferred profit, related party	340,476	340,476
Total current liabilities	5,240,233	4,927,642
Lease liability, non-current	612,018
Total liabilities	5,886,772	4,927,642
Commitments and contingencies
Stockholders’ equity
Common stock, par value $.001; authorized 75,000,000 shares; 49,893,534 shares issued and 49,376,843 shares outstanding as of March 31, 2020; 49,410,176 shares issued and 49,376,843 shares outstanding as of December 31, 2019;	49,893	49,410
Additional paid in capital	96,553,976	96,082,324
Accumulated deficit	(95,124,512)	(93,524,297)
Treasury stock, at cost, 33,333 shares	(911,516)	(911,516)
Total Milestone Scientific Inc. stockholders' equity	567,841	1,695,921
Noncontrolling interest	(80,012)	(67,274)
Total stockholders’ equity	487,829	1,628,647
Total liabilities and stockholders’ equity	$ 6,374,601	$ 6,556,289