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Test Code
VITAS
Test Name
Vitamin A, Serum
CPT Codes
84590
Expected Turnaround Time
3 - 5 days
Clinical Utility

Differential diagnosis of hypervitaminosis A. A combination of a low serum carotene level and a low vitamin A suggests inadequate vitamin A nutrition.
Specimen and Container Info

Specimen Type: Serum

Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Plain

Desired Volume: 0.8 mL
Collection Instructions
  1. Collect a gold top serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 0.8 mL of serum to a clear aliquot tube (screw cap).
Patient Preparation

Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
Transport Instructions

Transport to the laboratory refrigerated.
Stability Requirements

Room Temperature

7 days

Refrigerated

14 days

Frozen

14 days

Freeze/Thaw Cycles

Stable x6
Causes for Rejection
  • Sample type other than serum received
Methodology
Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Reference Intervals

See patient report.
Alternate Names
  • A, Vitamin
  • Retinol, Serum
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, daily
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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