Immediately following collection, thoroughly mix sample by gently inverting 5 times
Immediately after collection, mix tube thoroughly by gentle inversion, 8 - 10 times, to prevent clotting
Frozen (preferred) - 1 year
Ambient - 3 days
Refrigerated - 5 days
Grossly hemolyzed, lipemic or icteric samples
Enzyme-linked Immunosorbent Assay (ELISA)
Negative