Property and equipment

12 Months Ended

Dec. 31, 2021

Property and equipment

Property and equipment

3. Property and equipment

Property and equipment consist of the following:

	December 31,
	2021		2020
Lab equipment	$	90,770	$	100,249
Furniture & Fixtures		31,152		31,611
Computer equipment		18,955		20,935
Property and equipment, at cost		140,877		152,795
Less accumulated depreciation and amortization		(117,007)		(114,280)
Property and equipment—net	$	23,870	$	38,515

Depreciation expense for years ended December 31, 2021, 2020 and 2019 was $12,829, $28,834, $11,126, respectively.