Collect: One 6.0 mL SST (Gold) tube, One 6.0 PST (lithium or sodium heparin) tube, or One 5.0 mL EDTA (Lavender) tube.
2 mL serum or plasma (Min: 0.3 mL).
Stability:After separation from cells: Ambient: 24 hours; Refrigerated: 7 days; Frozen: 1 year (avoid more than 7 freeze/thaw cycles)