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

Not provided.

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 - Nicotinamide SerPl-mCnc
18244-4 - Niacin SerPl-mCnc

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.