VITAMIN A (RETINOL)

Specimen Required
Patient Preparation: Patient should fast overnight (12-14 hours). Infants - draw prior to next feeding.
Draw blood in a plain red-top tube and protect from light while tube clots. Centrifuge, separate serum from cells within 2 hours, and send 1.0 mL serum (0.5 mL minimum) frozen in an amber screw-capped plastic vial. PROTECT FROM LIGHT IMMEDIATELY AFTER COLLECTION. CRITICAL FROZEN.

Alternate Specimen
Serum: SST

Rejection Criteria
Specimen not protected from light.

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 months

Reference Range
38-106 ug/dL

Performed
Setup: Monday, Wednesday, Friday
Reported: 1-3 days

Turnaround Time3 days
Test CodeVITA
CPT-4 Code (s)
84590
LOINC Codes
2923-1

Warde
Medical
Laboratory