Specimen Type/Requirements

Red (Serum w/out gel) tube - Serum (preferred)
Lavender (EDTA) tube -  plasma
Dark Green (Sodium heparin w/out gel) tube - plasma
Dark Green (Lithium heparin w/out gel) tube  -  plasma

Grey (Sodium fluoride) tube  -  plasma
Royal Blue (EDTA Trace element) tube - plasma

Do not use gel barrier or serum separator tubes.

Collect just before next dose.

Not affected by hemolysis or lipemia.