Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net loss	$ (17,965)	$ (16,495)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	256	286
Non-cash lease expense	321	294
Stock-based compensation expense	1,833	2,552
Change in fair value of derivative related to Term Loan	770
Change in fair value of warrant liabilities	1,304
Issuance costs related to Common Stock Warrants	682
Loss on disposal of property and equipment	3
Non-cash interest expense	526	543
Changes in operating assets and liabilities:
Accounts receivable	840	773
Prepaid expenses and other assets	138	(1,476)
Inventories	(949)	(1,534)
Accounts payable	1,833	553
Accrued expenses and other liabilities	(2,211)	502
Deferred revenue	(1)	(161)
Operating lease liabilities	(320)	(278)
Net cash used in operating activities	(12,940)	(14,441)
Cash flows from investing activities
Purchases and manufacture of property and equipment	(120)	(29)
Net cash provided by investing activities	(120)	(29)
Cash flows from financing activities
Payment of employee restricted stock tax withholdings		(230)
Proceeds from public offering, net of issuance costs	10,918
Proceeds from secondary offering, net of issuance costs	930	1,432
Net cash provided by financing activities	11,848	1,202
Net change in cash, cash equivalents and restricted cash	(1,212)	(13,268)
Cash, cash equivalents and restricted cash at beginning of period	11,880	23,796
Cash, cash equivalents and restricted cash at end of period	10,668	10,528
Supplemental disclosures of cash flow information
Cash paid for interest	1,009	1,106
Supplemental disclosures of noncash activities
Transfer of T2 owned instruments and components (from) to inventory	(298)	(271)
Cashless exercise of Common Stock Warrants	(938)
Purchases of property and equipment included in accounts payable and accrued expenses	$ 136	$ 134