Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net loss	$ (1,152,265)us-gaap_ProfitLoss	$ (559,371)us-gaap_ProfitLoss
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation	83,646us-gaap_Depreciation	62,506us-gaap_Depreciation
Stock-based compensation expense	33,509us-gaap_ShareBasedCompensation	51,619us-gaap_ShareBasedCompensation
Stock to be issued for services	0	80,000
Amortization of deferred financing costs	0us-gaap_AmortizationOfFinancingCosts	13,022us-gaap_AmortizationOfFinancingCosts
Amortization of deferred rent related to lease incentives	(31,750)	(39,778)
Accretion and amortization on available for sale investments	40,901	0
Change in operating assets and liabilities
(Increase) Decrease in Accounts receivable, trade	50,579	(316,248)
Inventories	(277,563)us-gaap_IncreaseDecreaseInInventories	123,819us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	72,156	88,961
Increase (Decrease) in
Accounts payable	221,046	(159,087)
Accrued compensation and other current liabilities	(353,077)	(411,650)
Accrued interest, related parties	0	177,308
Deferred rent	4,966BLFS_DeferredRent	(5,227)BLFS_DeferredRent
Net cash used in operating activities	(1,307,852)	(894,126)
Cash flows from investing activities
Sales of available-for-sale investments	2,100,000	0
Purchase of available-for-sale investments	(342,872)us-gaap_PaymentsToAcquireInvestments	0us-gaap_PaymentsToAcquireInvestments
Purchase of property and equipment	(41,128)	(18,777)
Net provided by (used in) investing activities	1,716,000	(18,777)
Proceeds from sale of common stock, net of expenses	0	13,596,230
Proceeds from exercise of common stock options	24,934	0
Net cash provided by financing activity	24,934	13,596,230
Net increase in cash and cash equivalents	433,082	12,683,327
Cash and cash equivalents - beginning of period	2,538,758	156,273
Cash and cash equivalents - end of period	2,971,840	12,839,600
Non-cash investing activities
Costs incurred for capitalized internal use software not paid as of quarter end (amounts are included in liabilities)	334,640	0
Non-cash financing activities
Conversion of notes payable and related party accrued interest to equity, net of unamortized deferred finance costs (See Note 1)	$ 0	$ 14,180,193

No authoritative reference available.

No definition available.

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Deferred Rent.

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The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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This element represents the amortization of deferred leasing fees incurred by the lessor and amortized over the term of the lease. Such fees represent (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Additions made to capitalized computer software costs during the period.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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