Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income (loss)	$ 1,142,660	$ (1,638,502)
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation	161,200	176,251
Stock-based compensation expense	747,805	643,768
Stock issued for services		35,625
Amortization of deferred rent related to lease incentives	(63,499)	(63,499)
Amortization of debt discount		155,996
Loss from equity-method investment in SAVSU	320,554	489,473
Change in operating assets and liabilities
Accounts receivable, trade	(1,145,100)	20,610
Inventories	(275,135)	(11,286)
Prepaid expenses and other current assets	(103,108)	(135,905)
Accounts payable	168,005	(124,239)
Accrued compensation and other current liabilities	5,813	56,442
Accrued interest		185,417
Deferred rent	(5,880)	(62,419)
Net cash provided by (used in) operating activities	953,315	(272,268)
Cash flows from investing activities
Investment in equity investment SAVSU	(1,000,000)
Purchase of property and equipment	(61,479)	(78,185)
Net cash used in investing activities	(1,061,479)	(78,185)
Cash flows from financing activities
Proceeds from related party debt		1,000,000
Payments on equipment loan	(5,441)	(8,176)
Payments on capital lease obligations	(6,541)	(4,360)
Proceeds from exercise of common stock options and warrants	8,898,932	314,024
Payments of preferred stock dividends	(212,500)
Payments for redemption of preferred stock	(1,063,000)
Deferred costs related to potential stock issuance		(42,228)
Net cash provided by financing activities	7,611,450	1,259,260
Net increase in cash and cash equivalents	7,503,286	908,807
Cash and cash equivalents - beginning of period	6,663,318	1,405,826
Cash and cash equivalents - end of period	14,166,604	2,314,633
Non-cash investing and financing activities
Series A preferred stock dividends accrued not yet paid	93,258
Stock issued for services provided in prior period included in liabilities at year-end	35,625	35,624
Receivables converted to equity investment in SAVSU	150,103
Preferred stock issued on conversion of related party note payable and accrued interest		4,250,000
Preferred stock issuance costs not yet paid		8,038
Capital lease obligations incurred for purchases of equipment		52,327
Purchase of equipment with debt	17,604	39,243
Purchase of property and equipment not yet paid	$ 19,859