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Other Financial Information
 3 Months Ended
Mar. 31, 2022
Other Financial Information [Abstract]  
Other Financial Information Other Financial Information
Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets consist of the following (in thousands):
                                                                     
 March 31, 2022December 31, 2021
Diagnostic testing supplies$998 $1,091 
Prepaid product royalties46 49 
Prepaid maintenance and insurance contracts1,865 2,008 
Other prepaid expenses and other current assets65 490 
Prepaid expenses and other current assets$2,974 $3,638 
Property and Equipment, Net
Property and equipment, net consist of the following (in thousands):
 
 March 31, 2022December 31, 2021
Furniture and fixtures$83 $83 
Laboratory equipment4,692 4,361 
Computer equipment and software1,217 1,206 
Leasehold improvements1,151 1,151 
Construction in progress3,587 1,855 
Total property and equipment10,730 8,656 
Less: accumulated depreciation and amortization(4,162)(3,884)
Property and equipment, net$6,568 $4,772 
Depreciation and amortization expense for the three months ended March 31, 2022 and 2021 was approximately $0.3 million and $0.2 million, respectively.
 
Accrued and Other Current Liabilities
Accrued and other current liabilities consist of the following (in thousands):
 
 March 31, 2022December 31, 2021
Accrued payroll and related expenses$3,362 $4,048 
Accrued interest140 139 
Accrued purchases of goods and services1,482 510 
Accrued royalties151 180 
Accrued clinical study activity234 254 
Finance lease obligations, current portion592 587 
Other accrued liabilities760 1,108 
Accrued and other current liabilities$6,721 $6,826