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Test Code LAB580 Vitamin A, Serum

Secondary ID

42357

Useful For

Diagnosing vitamin A deficiency and toxicity

 

Monitoring vitamin A therapy

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Reporting Name

Vitamin A, S

Specimen Type

Serum


Specimen Required


Patient Preparation:

Fasting: 12 hours, required; infants should have specimen collected before next feeding.

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.

Note: Serum must be removed from the red blood cells within 2 hours of collection.


Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Reference Values

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

Cautions

Acute ethanol ingestion may result in increased serum vitamin A levels.

 

Testing of nonfasting specimens or the use of vitamin supplementation can result in elevated serum vitamin concentrations. Reference values were established using specimens from individuals who were fasting.

Day(s) Performed

Sunday through Friday

Report Available

2 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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
VITA Vitamin A, S 2923-1

 

Result ID Test Result Name Result LOINC Value
7597 Vitamin A 2923-1

NY State Approved

Yes

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.