I'm new here but I have had Crohn's for a while. I was wondering if others monitored their 6-TGN levels while on 6MP or azathioprine? I understand the test indicates how effective the drug is but I have noticed my levels jump around while I am on a constant dose of 6MP. When I mean jump around, I mean like moving from 150 to 400 while on a constant daily dose of 25mg (I think the theraputic range is 250-450). Any thoughts as to why the results move would be great.
26F, Crohns 8 years, pentasa, 6MP.