Vitamin B3 (Niacin and Metabolite)

Casandra

Casandra Test Code LC69991Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 070115CPT Code 84591

Vitamin B3 (Niacin and Metabolite)

Also known as: Niacin, Nicotinamide, Nicotinic Acid

Clinical Use

Order Test

Use

Measurement of vitamin B3 level as nicotinic acid and nicotinamide.

Special Instructions

To avoid delays in turnaround time when requesting multiple tests on frozen specimens, it is advised to submit separate frozen specimens for each test requested.

Limitations

This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration. The test may not detect all forms of niacin deficiency if it is caused by factors unrelated to direct dietary intake or absorption, such as certain metabolic disorders or drug interactions.

Test Details

Methodology

Mass Spectrometry

Biomarkers

Nicotinamide

Analyte

Nicotinamide • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

Nicotinic Acid

Analyte

Nicotinic Acid • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Result Codes

56961-6
18244-4

Result Turnaround Time

4-10 days

Specimen

Serum

Volume

1.5 mL

Minimum Volume

1 mL

Container

Red-top tube

Collection Instructions

Transfer the serum into a LabCorp PP transpak frozen purple tube with screw cap (LabCorp N° 049482). The specimen should be frozen immediately and maintained frozen until tested. Include the patient's age on the test request form.