Abnormal liver result

Hello I was wondering if anyone with colitis have had an abnormal liver result? I am asking for my brother who has collitis, he had an abnormal result and now has to go for a mri. Can the collitis medication over a long period cause this?

what meds is he taking? AZATHIAPRINE can have negtive affects on liver function and must be monitored via blood tests

Im not sure without asking, thanks for your reply