Certain Balance Sheet Items (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Schedule of Inventory, Current [Table Text Block]

The carrying amounts of inventories are as follows:

	March 31,		December 31,
	2013		2012
Raw materials	$	57,504	$	79,090
Finished goods		876,741		1,091,007
	$	934,245	$	1,170,097

Inventory consisted of the following:

	December 31, 2012		December 31, 2011
Raw materials	$	79,090	$	15,216
Finished goods		1,091,007		532,943
	$	1,170,097	$	548,159

Inventories consist of the following as of December 31, 2011 and 2010:

	2011		2010
Raw materials	$	11,352	$	13,191
Finished goods		39,854		46,588
Total inventories	$	51,206	$	59,779

Property, Plant and Equipment [Table Text Block]

Property and equipment consist of the following as of December 31:

	2011			2010
Lab equipment	$	1,886,259		$	1,883,836
Leasehold improvements		1,285,036			1,285,036
Computer equipment and software		171,628			171,628
Furniture and fixtures		79,838			79,838
Total		3,422,761			3,420,338
Less accumulated depreciation and amortization		(2,614,809	)		(2,252,564	)
Property and equipment, net	$	807,952		$	1,167,774

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses consist of the following as of December 31:

	2011		2010
Research and development expense	$	66,606	$	14,465
Compensation		–		139,394
Other		33,917		5,395
Total accrued expenses	$	100,523	$	159,254