Test ID VITAP Vitamin A, Serum
Specimen Required
Only orderable as part of a profile. For more information see VITAE / Vitamin A and Vitamin E, Serum.
Patient Preparation: Fasting overnight (12-14 hours) (infants: collect specimen prior to next feeding)
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Amber vial
Specimen Volume: 0.5 mL
Collection Instructions: Within 24 hours of collection, centrifuge, and aliquot serum into an amber vial to protect from light.
Useful For
Diagnosing vitamin A deficiency and toxicity as a part of a profile
Monitoring vitamin A therapy
Method Name
Only orderable as part of a profile. For more information see VITAE / Vitamin A and Vitamin E, Serum.
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Vitamin A, SSpecimen Type
SerumSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 28 days | LIGHT PROTECTED |
Frozen | 28 days | LIGHT PROTECTED | |
Ambient | 7 days | LIGHT PROTECTED |
Reference Values
Only orderable as part of a profile. For more information see VITAE / Vitamin A and Vitamin E, Serum.
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
≥18 years: 32.5-78.0 mcg/dL
Day(s) Performed
Monday through Friday
Report Available
2 to 5 daysPerforming Laboratory

Test Classification
This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
84590
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
VITAP | Vitamin A, S | 2923-1 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
605124 | Vitamin A | 2923-1 |