Thanks for the information. Again only your GI doc can give you the proper advice. The stuff I am posting is just based on my experiences with UC. Yes, your wbc is low but that can happen with 6MP. Now that your off the counts will most likely normalize. Your Liver enzymes, you should be referring to ALT and AST which are commonly tested. There normal values are 0-40 depending on the lab you are using. The other liver tests most commonly used are the bilirubin and the alk/phos for which the normal values are typically 40-120. So if I understand correctly your liver values are just out of the normal range. I talked extensively with my GI doc and he really only worries about the liver when the values are around 100 for the ALT and AST. So I think your doc just took you off because of the low wbc which will come back. Then he just might put you on a lower dosage. Your liver is not out of whack so just relax. Again your GI doc is the best person to talk to but this is my opinion.