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Balance sheet components
 3 Months Ended
Dec. 31, 2023
Balance Sheet Related Disclosures [Abstract]  
Balance sheet components Balance sheet components
Inventories consist of the following:
(in thousands)December 31,
2023		September 30,
2023
Raw materials$23,753 $27,024 
Work-in-process2,3901,113
Finished goods4,7203,926
$30,863 $32,063 

There is no consigned inventory balance as of December 31, 2023 and September 30, 2023.
Property and Equipment, net consists of the following:

(in thousands) December 31,
2023		September 30,
2023
Laboratory equipment$105,517 $104,508 
Furniture, fixtures and other equipment3,575 3,484 
Vehicles129 85 
Computer equipment3,128 3,103 
Computer software8,813 5,507 
Leasehold improvements57,410 57,271 
Construction in progress5,259 8,528 
$183,831 $182,486 
Less: Accumulated depreciation (57,606)(50,656)
$126,225 $131,830 

As of December 31, 2023, the construction in progress mainly represents equipment costs and software development costs. Total depreciation expense was $6.9 million for the three months ended December 31, 2023 and $3.9 million for the three months ended and December 31, 2022, respectively.

Other current liabilities
The other current liabilities consist of the following:
(in thousands)December 31,
2023		September 30,
2023
Income and other taxes payable$3,197$4,374
Deferred revenue2,6442,999
Other current liabilities577430
$6,418 $7,803