It is possible that the medication can raise the liver function levels.
In addition to the hepatitis tests, you can also consider a liver ultrasound to evaluate the liver anatomy.
If the tests return normal, Gilbert's would certainly be a likely cause.
I am not aware of 6-MP being linked to Gilbert's specifically. If the elevation was caused by the medication, you can repeat the liver function tests in 4-6 weeks to ensure they are not rising.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
http://www.straightfromthedoc.com
Thanks