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Inventory
9 Months Ended
Sep. 30, 2022
Inventory  
Inventory

8. Inventory

Inventory as of September 30, 2022 and December 31, 2021 consisted of the following:

September 30,

December 31,

2022

2021

Raw materials

$

5,761

$

3,685

Work in process

37,173

1,007

Finished goods

21,718

12,702

Total inventory

$

64,652

$

17,394

The aggregate charges related to excess inventory for the three and nine months ended September 30, 2022 and 2021 were immaterial. These expenses were recorded as a component of cost of product revenues.