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Property and equipment, net (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and equipment, net
Depreciation is recorded, once assets are placed in service, using the straight-line method over the estimated useful lives of the respective assets, which are as follows:
Asset type
Estimated useful life
Computers and computer equipment
3 years
Laboratory equipment
3 years
Manufacturing equipment
3 years
Website development costs
1-2 years
Property and equipment, net consists of the following:
 
 
December 31, 2017
 
December 31, 2016
Manufacturing equipment

$
421,999

 
$
421,999

Computers and computer equipment
311,847

 
276,263

Website development costs

177,886

 
159,836

Laboratory equipment
13,368

 
13,368

Capital in progress
28,823

 
7,863

Total property and equipment
953,923

 
879,329

Accumulated depreciation
(622,883
)
 
(323,014
)
Property and equipment, net
$
331,040

 
$
556,315