Test Directory

Vitamin A, Serum

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Updated Test Information:

Test Description
Vitamin A, Serum
Synonym(s)
Vitamin A
Test ID
VITA
General Information
Useful for:
Diagnosing vitamin A deficiency and toxicity
Monitoring vitamin A therapy
Specimen Type
Serum
Specimen Requirements
Red Top
Specimen Collection / Processing Instructions
Red Top - Fasting overnight (12-14 hours) (infants:draw prior to next feeding)
Stability
Refrigerated (preferred) 28 days
Ambient 28 days
Frozen 28 days
Unacceptable Specimen Conditions
Gross hemolysis OK
Gross lipemia OK
Gross icterus OK
Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Estimated TAT
2-5 days
Testing Schedule
Monday-Friday
CPT Code(s)
84590
Minimum Sample Volume
0.25 mL
Reference Range
0-6 years 11.3-64.7 mcg/dL
7-12 years 12.8-81.2 mcg/dL
13-17 years 14.4-97.7 mcg/dL
> or =18 years 32.5-78.0 mcg/dL
Performing Lab
Mayo
LOINC Code(s)
2923-1