Lab ranges vary from lab to lab.
You should direct this question to your doctor.
It is rare for people in US to have low niacin... this causes pellegra which is not common in US anymore. (but more so in developing countries.)
This is an interesting and informative monograph on niacin.
http://lpi.oregonstate.edu/infocenter/vitamins/niacin/
__________________
aka mrsdoubtfyre
All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
.
************************************
Please use the search function to find more information here in our forums. Your keyword must be at least 4 letters long. This is the handy link:
.
Vitamin B3 levels in Blood
Linear Mode
