NIACIN AND METABOLITES (VITAMIN B3)

Components
Includes Nicotinamide, Nicotinic Acid and Nicotinuric Acid

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate serum from cells within 2 hours and send 1.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA

Rejection Criteria
Polymer gel separation tube (SST or PST), samples received room temperature

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: 1 day; Refrigerated: 7 days; Frozen: 30 days

Reference Range
By report

Performed
Thursday

Turnaround Time5-7 days
Test CodeNIACN
CPT-4 Code (s)
84591
LOINC Codes
Nicotinamide   56961-6  
Nicotinic Acid   18244-4  
Nicotinuric Acid   No code available  

Warde
Medical
Laboratory