Immediately following collection, thoroughly mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Red/grey serum separator (SST) vial/tube, 10 mL
False bottom plasma/serum transport vial/tube (AHL)
Red/grey serum separator (SST) vial/tube, 10 mL
Refrigerated (preferred) - 7 days
Ambient - 24 hours
Frozen (OK)
Chemiluminescence Immunoassay (CLIA)