Balance Sheets - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 19,116,419	$ 24,783,029
Accounts receivable, net	113,960	84,258
Inventory, net	244,181	208,270
Other current assets	854,962	555,853
Total current assets	20,329,522	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	2,434,524	2,261,793
Construction in progress	461,735	379,713
Property and equipment, gross	4,616,187	4,321,129
Less accumulated depreciation	(2,985,367)	(2,722,117)
Net property and equipment	1,630,820	1,599,012
Long-term assets:
Lease right-of-use assets, net	486,926	665,747
Intangible assets, net of accumulated amortization	10,601	25,093
Other long-term assets	663,083	655,418
Total long-term assets	1,160,610	1,346,258
Total assets	23,120,952	28,576,680
Current liabilities:
Accounts payable	428,325	445,522
Accrued expenses	551,828	603,787
Clinical holdback - current portion	36,238	18,947
Note payable - current portion	417,841	181,123
Lease liabilities - current portion	394,518	406,674
Other - current	36,037	36,037
Total current liabilities	1,864,787	1,692,090
Long-term liabilities:
Clinical holdback - long-term portion	109,139	149,791
Lease liabilities - long-term portion	209,098	402,417
Total long-term liabilities	318,237	552,208
Total liabilities	2,183,024	2,244,298
Commitments and contingencies
Stockholders' equity:
Common stock, $.001 par, 200,000,000 authorized, 11,930,833 shares issued and 11,813,610 outstanding as of June 30, 2022; and 11,921,388 shares issued 11,804,165 outstanding as of December 31, 2021	11,931	11,921
Treasury stock, 117,223 shares	(60,000)	(60,000)
Warrants	567,972	702,492
Additional paid-in-capital	108,675,491	108,418,304
Accumulated deficit	(88,257,466)	(82,740,335)
Total stockholders' equity	20,937,928	26,332,382
Total liabilities and stockholders' equity	$ 23,120,952	$ 28,576,680