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Vitamin A (Retinol) : 921
Test CodeVITMA or 921
Alias/See Also
Retinol
CPT Codes
84446
Instructions
Separate from cells as soon as possible after clotting. Send serum in an amber tube. If an amber tube is not available, wrap transport tube in aluminum foil to protect from light.
Transport Container
Preferred:
2 mL serum - protected from light
Minimum Volume: 0.7 mL
2 mL serum - protected from light
Minimum Volume: 0.7 mL
Transport Temperature
Frozen.
Specimen Stability
Room temperature: 24 hours; Refrigerated: 7 days; Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly hemolyzed; Heavily lipemic sera; Received in Serum separator tube (SST) or red-top tube (no gel) collection tube; Received room temperature; Not light protected; Plasma
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Setup Schedule
Monday - Saturday
Report Available
2-3 days
Reference Range
1-6 Years 20-43 mcg/dL
7-12 Years 26-49 mcg/dL
13-19 Years 26-72 mcg/dL
Adult 38-98 mcg/dL
7-12 Years 26-49 mcg/dL
13-19 Years 26-72 mcg/dL
Adult 38-98 mcg/dL
Clinical Significance
Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption and are rarely due to inadequate diet.
Performing Laboratory
med fusion
