Vitamin B3 (Niacin) Test is used to determine Vitamin B3 (Niacin) deficiencies. Vitamin B3 (Niacin) plays a role in converting carbohydrates into glucose, metabolizing fats and proteins, and keeping the nervous system working properly. Niacin also helps the body make sex-related and stress-related hormones and improves circulation and cholesterol levels.
This test is asked to do when symptoms of mild niacin/vitamin B3 deficiency are seen like indigestion, fatigue, canker sores, vomiting, depression.
Adult Reference Range:
> or = 10 years
Normal 0.50 – 8.45
Low <0.50
High >8.45
Pediatric Reference Range:
<10 years
Normal 0.50 - 8.91
Low <0.50
High >8.91
