2 mL (1 mL min.) Plasma from 1 Lavender Top (EDTA) tube. Separate plasma from cells within 3 hours of collection and transfer to a plastic transport vial. Freeze immediately. Ship frozen. Overnight fasting is mandatory. Wrap in aluminium foil to protect from light. Avoid vitamin supplements 24 hours prior to sample collection.
LC-MS/MS
4 weeks
Overnight fasting is mandatory. Wrap in aluminium foil to protect from light. Avoid vitamin supplements 24 hours prior to sample collection.