Balance Sheets - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 10,161,338	$ 12,961,936
Accounts receivable, net	123,955	77,470
Inventory, net	500,741	436,723
Other current assets	542,067	655,362
Total current assets	11,328,101	14,131,491
Property and equipment, at cost:
Leasehold improvements	1,195,637	1,195,637
Office equipment	99,344	99,344
Furniture and fixtures	419,303	419,303
Machinery and equipment	2,601,389	2,572,243
Construction in progress	406,588	413,843
Property and equipment, gross	4,722,261	4,700,370
Less accumulated depreciation	(3,344,400)	(3,217,319)
Net property and equipment	1,377,861	1,483,051
Long-term assets:
Lease right-of-use assets, net	239,351	319,557
Intangible assets, net of accumulated amortization	1,881	3,294
Other long-term assets	920,812	958,177
Total long-term assets	1,162,044	1,281,028
Total assets	13,868,006	16,895,570
Current liabilities:
Accounts payable	526,764	510,758
Accrued expenses	535,417	456,714
Note payable	0	141,298
Clinical holdback - current portion	45,352	45,206
Lease liabilities - current portion	305,071	373,833
Total current liabilities	1,412,604	1,527,809
Long-term liabilities:
Clinical holdback - long-term portion	98,818	96,658
Lease liabilities - long-term portion	0	28,584
Total long-term liabilities	98,818	125,242
Total liabilities	1,511,422	1,653,051
Commitments and contingencies
Stockholders' equity:
Common stock, $.001 par, 200,000,000 authorized, 11,989,796 shares issued and 11,872,573 outstanding as of March 31, 2023; and 11,986,927 shares issued and 11,869,704 outstanding as of December 31, 2022	11,990	11,987
Treasury stock, 117,223 shares	(60,000)	(60,000)
Warrants	567,972	567,972
Additional paid-in-capital	108,917,384	108,857,065
Accumulated deficit	(97,080,762)	(94,134,505)
Total stockholders' equity	12,356,584	15,242,519
Total liabilities and stockholders' equity	$ 13,868,006	$ 16,895,570