3 mL (1.5 mL min.) Serum from 1 Red Top (No Additive) tube. Do not use SST gel barrier tubes. Separate serum within 1 hour of collection. Ship refrigerated or frozen. Wrap in aluminium foil to protect from light. Overnight fasting is mandatory.
HPLC
4 days
Overnight fasting is mandatory. Wrap sample in aluminium foil to protect from light.