Annual report pursuant to Section 13 and 15(d)

4. Accounts Receivable (Details)

v3.7.0.1
4. Accounts Receivable (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Accounts receivable, gross $ 13,922,081 $ 105,901,690
Less: Allowance for discounts (12,103,547) (97,577,130)
Less: Allowance for bad debts (350,954) (175,076)
Accounts receivable, net 1,467,580 8,149,484
Laboratory Services [Member]    
Accounts receivable, gross 13,220,498 105,332,339
All Others [Member]    
Accounts receivable, gross $ 701,583 $ 569,351