Hi everyone. I'm 4 years post transplant and my tacrolimus level with creatinine still hasn't stabilized. This is my second transplant. My creatinine used to be less than 1 but now it's around 1.7. It usually increases with increase in tac dose. My tac level fluctuates so much from being 3.5 to 8. Doctors want it to be around 7 or 8. What are your tacrolimus levels and preferred tac level at your clinics? How long have you had your transplant and your tac peak level? Mine is 16.8. Thank you!