A ratio of 2.10 - 2.50 is consistent with a mild niacin deficiency. A ratio of less than 2.10 is consistent with a marked niacin deficiency."

Patient Instructions:

No vitamin B3 (niacin) containing supplements for 24 hours prior to testing.

Sample Report:

Sample Requirements:

Green top (Heparin ); Sample must reach the Laboratory within 24hrs (no later than 1pm Fridays).

Postal Samples: