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Test Code VITAP Vitamin A, Serum

Reporting Name

Vitamin A, S

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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)


Specimen Required


Only orderable as part of a profile. For more information see VITAE / Vitamin A and Vitamin E, Serum.

 

Patient Preparation: Patient should fast overnight (12-14 hours); infants should have specimen collected before 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: Centrifuge and aliquot serum into light protected plastic vial within 2 hours of collection.


Specimen Type

Serum

Specimen 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

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

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

Interpretation

The World Health Organization recommends supplementation when vitamin A levels fall below 20.0 mcg/dL.

 

Severe deficiency is indicated at levels less than 10.0 mcg/dL.

 

Vitamin A values above 120.0 mcg/dL suggest hypervitaminosis A and associated toxicity.

Day(s) Performed

Sunday through Friday

Report Available

2 to 5 days

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It 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