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Test Code VITA Vitamin A, Serum

Additional Codes

Epic Ordering Code LAB3040118
NBS code LBC13320
Service code 36704

Reporting Name

Vitamin A, S

Specimen Type

Serum


Specimen Required


Patient Preparation:

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

2. Patient must not consume any alcohol for 24 hours before specimen collection.

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 serum

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


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Red Top
Acceptable: Yellow Top
Fasting: 12 hours, required; infants should have specimen collected before next feeding
Patient must not consume any alcohol for 24 hours before specimen collection.
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube within 2 hours of collection.
Specimen type: Serum
Volume: 0.5 mL
Storage/transport requirements: Refrigerated

Forms

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

Specimen Minimum Volume

Serum: 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

Method Name

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

Day(s) Performed

Monday through Friday, Sunday

Report Available

2 to 5 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Diagnosing vitamin A deficiency or toxicity

 

Monitoring vitamin A therapy

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

Secondary ID

42357

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.
National University Hospital-Singapore Additional Information:

Last updated 18/08/2026