Liquid Chromatography- Tandem Mass Spectrometry (LC-MS/MS)
Nicotinic Acid (Niacin) Cutoff <5.0 ng/mL Nicotinamide: 85.0 - 48.0 ng/mL Nicotinuric acid Cutoff: <5.0 ng/mL
3 - 9 days
- Nicotinic Acid
Collect specimen in a lavender top tube. Centrifuge, aliquot plasma into a plastic vial and freeze within 2 hours of collection.
Protect specimen from light within 15 minutes of collection. Stable 12 hours refrigerated, but spin and freeze for longer stability, and frozen is preferred for shipment to Mayo.
Test performed by Mayo Clinic Laboratories