Vitamin A (Retinol)
Phlebotomy Requirements
Must be a separate sample. Send to laboratory immediately. Protect from light.
Collection
Hospital sample collection. Minimum volume: 2ml.
Sample container
Ipswich- 7.5ml Lithium Heparin (orange top) Trace Metal - Colchester 7.5ml Brown
Preservative
NON GEL
Site
Referral Colchester: London, 14d TAT. Ipswich Request: Glasgow, 14d TAT.
