Specimen Requirements

Serum:  standard sampling tubes or tubes containing separating gel.

     Plasma: Li-, Na-, NH4-heparin, and K₃-EDTA.

Sample Stability:

          5 days at 15 – 25 ºC 

7 days at 2 – 8 ºC

30 days at -20 ºC (Freeze ONLY once)