Immediately following collection, thoroughly mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Refrigerated (preferred) - 7 days
Frozen (OK)
Chemiluminescence Immunoassay (CLIA)
Negative: <135 Index Value (presumed not immune)
Equivocal: 135 - 165 Index Value (repeat in 1 - 2 wks)
Positive: ≥ 165 Index Value (presumed immune)