Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting
Spin within two (2) hours of sample collection
Lt green plasma separator (PST)
Immediately following collection, thoroughly mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Refrigerated (preferred) - 7 days
Ambient - 7 days
Frozen - 1 year
Enzymatic colorimetric
13 - 60 U/L