Equipment, Net
 9 Months Ended
Sep. 30, 2013
Equipment, Net [Abstract]  
Equipment, Net

6.  Equipment, Net

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

September 30,

December 31,

 

 

2013

2012

 

 

 

 

 

 

Furniture and fixtures

 

$
58,171 

$
34,200 

Office equipment

 

 
39,024 

 
81,074 

Lab and computer equipment

 

 
425,195 

 
430,261 

Leasehold improvements

 

 
119,841 

 
119,841 

 

 

 

 

 

 

Total fixed assets

 

 
642,231 

 
665,376 

Less: Accumulated depreciation

 

 
(571,812)

 
(613,220)

 

 

 

 

 

 

Net carrying amount

 

$
70,419 

$
52,156 

 

Depreciation expense was $9,645 and $10,721 for the three months ended September 30, 2013 and 2012, respectively, and $28,196 and $32,163 for the nine months ended September 30, 2013 and 2012, respectively.