Specimen Requirements

Container/Tube Type: 

Green No Gel (Lithium Heparin)
Light Green (Lithium Heparin Plasma Separator Tube)

Also Acceptable: 

Red (No Additive)
SST (Serum Separator)

Minimum Sample Volume: 

0.5 mL

Remarks: 

Draw blood 45 to 75 minutes after an intramuscular injection or 15 to 30 minutes after end of an intravenous infusion.