Condensed Balance Sheets - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 2,598,143	$ 3,613,392
Short-term investments available-for-sale, at fair value	28,711,759
Accounts receivable, net	696,827	801,125
Inventory, net of allowance of $328,022 at September 30, 2015 and $54,269 at December 31, 2014	2,266,182	1,685,814
Prepaid insurance	393,127	20,905
Prepaid expenses and other	223,472	91,130
Total current assets	34,889,510	6,212,366
Long-term investments available-for-sale, at fair value	7,766,952
Deferred financing and offering costs	59,582	1,369,281
Property and equipment:
Office equipment	442,490	414,424
Leasehold improvements	252,750	234,602
Laboratory and manufacturing equipment	3,127,484	2,003,693
Field equipment	180,355	286,044
Software	140,248	140,248
Construction in progress	49,953	6,125
Total property and equipment	4,193,280	3,085,136
Less: accumulated depreciation and amortization	(2,365,135)	(1,938,537)
Property and equipment, net	1,828,145	1,146,599
Total assets	44,544,189	8,728,246
Current liabilities:
Accounts payable	966,853	948,429
Accrued liabilities	1,407,998	1,499,750
Deferred revenue	32,716	41,248
NuvoGen obligation	362,500
Term loan	2,017,712	813,715
Total current liabilities	4,787,779	3,303,142
Redeemable convertible preferred stock warrant liability		730,543
Term loan payable - non-current, net of discount	8,738,683	9,705,655
NuvoGen obligation - non-current, net of discount	8,544,591	8,677,859
Other	36,447	58,380
Total liabilities	$ 22,107,500	22,475,579
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		$ 55,922,593
Commitments and Contingencies
Stockholders’ equity (deficit):
Preferred stock, $0.001 par value; 10,000,000 and 0 authorized at September 30, 2015 and December 31, 2014, respectively; no shares issued and outstanding at either date.
Common stock, $0.001 par value; 200,000,000 and 600,000,000 shares authorized at September 30, 2015 and December 31, 2014, respectively; 6,841,260 and 6,839,864 shares issued and outstanding, respectively, at September 30, 2015, 334,003 and 332,607 shares issued and outstanding, respectively, at December 31, 2014	$ 6,840	$ 333
Additional paid-in-capital (distributions in excess of capital)	106,366,937	(1,426,556)
Treasury stock – 1,396 shares, at cost	(75,000)	(75,000)
Accumulated other comprehensive income	4,754
Accumulated deficit	(83,866,842)	(68,168,703)
Total stockholders' equity (deficit)	22,436,689	(69,669,926)
Total liabilities and stockholders' equity (deficit)	$ 44,544,189	8,728,246
Series A Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		1,402,687
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		1,402,687
Series B Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		2,099,310
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		2,099,310
Series C-1 Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		4,567,525
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		4,567,525
Series C-2 Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		2,223,506
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		2,223,506
Series D Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		37,174,666
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		37,174,666
Series E Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock:
Total Redeemable Convertible Preferred Stock		8,454,899
Stockholders’ equity (deficit):
Total stockholders' equity (deficit)		$ 8,454,899