Balance Sheets - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 12,961,936	$ 24,783,029
Accounts receivable, net	77,470	84,258
Inventory, net	436,723	208,270
Other current assets	655,362	555,853
Total current assets	14,131,491	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	419,303	424,947
Machinery and equipment	2,572,243	2,261,793
Construction in progress	413,843	379,713
Property and equipment, gross	4,700,370	4,321,129
Less accumulated depreciation	(3,217,319)	(2,722,117)
Net property and equipment	1,483,051	1,599,012
Long-term assets:
Lease right-of-use assets, net	319,557	665,747
Intangible assets, net of accumulated amortization	3,294	25,093
Other long-term assets	958,177	655,418
Total long-term assets	1,281,028	1,346,258
Total assets	16,895,570	28,576,680
Current liabilities:
Accounts payable	510,758	445,522
Accrued expenses	456,714	603,787
Clinical holdback - current portion	45,206	18,947
Note payable - current portion	141,298	181,123
Lease liabilities - current portion	373,833	406,674
Other - current	0	36,037
Total current liabilities	1,527,809	1,692,090
Long-term liabilities:
Clinical holdback - long-term portion	96,658	149,791
Lease liabilities - long-term portion	28,584	402,417
Total long-term liabilities	125,242	552,208
Total liabilities	1,653,051	2,244,298
Commitments and contingencies
Stockholders' equity:
Common stock, $.001 par, 200,000,000 authorized, 11,986,927 shares issued and 11,869,704 outstanding as of December 31, 2022; and 11,921,388 shares issued and 11,804,165 outstanding as of December 31, 2021	11,987	11,921
Treasury stock, 117,223 shares	(60,000)	(60,000)
Warrants	567,972	702,492
Additional paid-in-capital	108,857,065	108,418,304
Accumulated deficit	(94,134,505)	(82,740,335)
Total stockholders' equity	15,242,519	26,332,382
Total liabilities and stockholders' equity	$ 16,895,570	$ 28,576,680