Dk green heparin (Li or Na), no gel x 2
Submit entire specimen; do not open
Dk green heparin (Li or Na), no gel tubes
Refrigerated (preferred) - 3 days
Frozen (OK)
For storage beyond three days, the specimen should be frozen
Headspace Gas Chromatography/Flame Ionization Detection (GC-FID)
None detected
>50 mg/L