Indications:
Our niacin (vitamin B3) test includes levels of niacinamide, nicotinic acid, nicotinamide and the total vitamin B3 level (as NAD).
Vitamin B3 is required as a co-enzyme in electron-transfer reactions (catabolism of carbohydrates, fats, proteins, and alcohol), also as a substrate for NAD-consuming enzymes (ADP-ribosylation, NAD-dependent deacetylation, calcium mobilization) and as a ligand (inhibitory neurotransmitter, pro-inflammatory cytokine, calcium mobilization).
Good gut absorption is normally achieved
Meat (beef & poultry) and fish are good dietary sources, primarily as highly bioavailable NAD and NADP. Nuts, legumes, and grains also contain niacin but can be more difficult to absorb.
Patient Instructions:
No vitamin B3/niacin containing supplements for 24 hours prior to testing
Sample Requirements:
Yellow – Protect from light