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Vitamin B3 and Metabolites, Plasma

Nicotinic Acid, Niacin (Vitamin B₃), Nicotinamide, Nicotinuric Acid, Niacin

Test Codes

EPIC: LAB1230858, Beaker: XNIAC, MAYO: VITB₃

Department

Send Outs

Specimen Collection Criteria

Collect: Lavender-top EDTA tube.

Physician Office/Draw Specimen Preparation

Centrifuge to separate plasma from cells within 2 hours of collection. Transfer plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.5 mL plasma, refrigerated (2-8°C or 36-46°F). (Minimum: 0.75 mL).

Rejection Criteria

• Grossly hemolyzed specimens.
• Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate plasma from cells within 2 hours of collection. Transfer plasma to a plastic transport tube refrigerate (2-8°C or 36-46°F).

Transport: 1.5 mL plasma, frozen (-20°C/-4°F or below). (Minimum: 0.75 mL).

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 21 days
Refrigerated (2-8°C or 36-46°F): 28 days
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Medical Laboratories, Rochester, MN.

Performed

Monday, Tuesday, Thursday, Friday
Results available in 2-4 days.

Reference Range

By report.

Test Methodology

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

Interpretation

By report.

Clinical Utility

This assay provides specific quantitation of a patient's niacin level.

CPT Codes

84591

Contacts

Last Updated

12/6/2024