Balance Sheets - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 21,767,634	$ 24,783,029
Accounts receivable, net	170,302	84,258
Inventory, net	223,008	208,270
Other current assets	567,300	555,853
Total current assets	22,728,244	25,631,410
Property and equipment, at cost:
Leasehold improvements	1,195,637	1,155,332
Office equipment	99,344	99,344
Furniture and fixtures	424,947	424,947
Machinery and equipment	2,287,126	2,261,793
Construction in progress	434,443	379,713
Property and equipment, gross	4,441,497	4,321,129
Less accumulated depreciation	(2,854,315)	(2,722,117)
Net property and equipment	1,587,182	1,599,012
Long-term assets:
Lease right-of-use assets, net	574,943	665,747
Intangible assets, net of accumulated amortization	17,663	25,093
Other long-term assets	625,418	655,418
Total long-term assets	1,218,024	1,346,258
Total assets	25,533,450	28,576,680
Current liabilities:
Accounts payable	548,377	445,522
Accrued expenses	565,228	603,787
Clinical holdback - current portion	36,238	18,947
Note payable - current portion	45,666	181,123
Lease liabilities - current portion	400,620	406,674
Other - current	36,037	36,037
Total current liabilities	1,632,166	1,692,090
Long-term liabilities:
Clinical holdback - long-term portion	102,502	149,791
Lease liabilities - long-term portion	305,071	402,417
Total long-term liabilities	407,573	552,208
Total liabilities	2,039,739	2,244,298
Commitments and contingencies
Stockholders' equity:
Common stock, $.001 par, 200,000,000 authorized, 11,921,388 shares issued and 11,804,165 outstanding as of March 31, 2022 and December 31, 2021	11,921	11,921
Treasury stock, 117,223 shares	(60,000)	(60,000)
Warrants	702,492	702,492
Additional paid-in-capital	108,462,663	108,418,304
Accumulated deficit	(85,623,365)	(82,740,335)
Total stockholders' equity	23,493,711	26,332,382
Total liabilities and stockholders' equity	$ 25,533,450	$ 28,576,680