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Composition of Certain Consolidated Financial Statement Items (Tables)
12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Inventory
Inventory (in thousands):
December 31,
20232022
Raw materials$16,737 $12,417 
Work-in-process1,142 1,738 
Finished goods21,877 14,388 
Total inventory$39,756 $28,543 
Schedule of Property and Equipment, Net
Property and Equipment, Net (in thousands):
December 31,
20232022
Laboratory, manufacturing and computer equipment, and furniture and fixtures
$15,610 $3,260 
Rental equipment897 1,313 
Leasehold improvements12,362 4,941 
Evaluation units— 2,475 
Construction in progress
3,548 5,671 
Total property and equipment32,417 17,660 
Less: accumulated depreciation and amortization(3,669)(9,004)
Total property and equipment, net$28,748 $8,656 
Schedule of Other Current Liabilities
Other Current Liabilities (in thousands):
December 31,
20232022
Accrued purchases106 2,006 
Professional services1,558 1,739 
Sales tax1,725 829 
Interest333 532 
Travel expenses519 429 
Asset retirement obligation232 200 
Clinical trial expenses392 175 
Other1,453 1,558 
Total other current liabilities$6,318 $7,468 
Schedule of Interest and Other Income (Expense), Net
Interest and Other Income (Expense), net (in thousands):
Year Ended December 31,
202320222021
Interest income$7,551 $2,497 $76 
Decrease in fair value of preferred stock warrants
— — 64 
Change in fair value of loan facility derivative liability
(107)(283)135 
Other(176)(203)(154)
Total interest and other income, net
$7,268 $2,011 $121