Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (5,172,992)	$ (5,255,473)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	417,188	419,435
Amortization	32,023	80,099
Amortization of discount on investments	0	(1,189)
Amortization of right-of-use assets	284,519	320,184
Share-based compensation expense	163,924	239,075
Loan and accrued interest forgiveness on note payable	(821,515)	0
Loss on disposal of fixed asset	2,850	0
Changes in operating assets and liabilities:
Accounts receivable	(17,669)	(37,105)
Inventory	(18,958)	15,549
Other assets	498,878	205,839
Accounts payable	(237,443)	4,426
Accrued expenses and other	(510,730)	634,621
Lease liabilites	(312,893)	(337,074)
Other liabilities	9,935	49,606
Net cash used in operating activities	(5,682,883)	(3,662,007)
Cash flows from investing activities:
Maturities of short-term investments	0	1,000,000
Purchases of property and equipment	(188,245)	(8,352)
Payments for patents and other intangible assets	0	(42,995)
Net cash (used in) provided by investing activities	(188,245)	948,653
Cash flows from financing activities:
Proceeds from issuance of common stock	31,725,645	55,550
Payments of offering costs	(1,578,643)	0
Proceeds from note payable and advance	0	822,500
Repayment of note payable	(302,343)	0
Payments under lease obligations	(15,448)	(13,977)
Net cash provided by financing activities	29,829,211	864,073
Net change in cash and cash equivalents	23,958,083	(1,849,281)
Cash and cash equivalents:
Beginning of the period	3,322,226	6,415,274
End of the period	27,280,309	4,565,993
Cash paid for:
Interest	11,155	5,487
Income taxes	800	2,000
Non-cash investing and financing activities:
Prepaid insurance financed with promissory notes	320,866	0
Conversion of convertible preferred stock to common stock	$ 55,360,897	$ 0