CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net loss	$ (1,665)	$ (1,832)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	39	37
Stock-based compensation	91	85
Changes in operating assets and liabilities:
Accounts receivable	(163)	(66)
Prepaid expenses and other current assets	119	42
Inventory	41	(79)
Other assets	0	(2)
Accounts payable	(51)	(34)
Accrued expenses	32	23
Deferred revenue	0	(3)
Net cash used in operating activities	(1,557)	(1,829)
Cash flows from investing activities:
Purchase of property and equipment	(36)	(2)
Net cash used in investing activities	(36)	(2)
Cash flows from financing activities:
Proceeds from the exercise of warrants, net	889	6
Proceeds from issuances of common stock, net	1,066	0
Repayments of notes payable	(14)	(8)
Net cash provided by (used in) financing activities	1,941	(2)
Increase (decrease) in cash and cash equivalents	348	(1,833)
Cash and cash equivalents, beginning of period	1,307	5,395
Cash and cash equivalents, end of period	1,655	3,562
Supplemental cash flow information is as follows:
Interest paid	5	4
Income taxes paid	$ 0	$ 0