What could cause elevated liver enzymes in an otherwise healthy 21 year old?

Yesterday I was scheduled for a colonoscopy to find the cause of my chronic diarrhea, abdominal pain, weight loss, etc. The doctor ended up doing a gastroscopy as well. When I woke in the recovery room, he ordered STAT blood work to test my liver function (I believe)... and it came back elevated. I don’t know anything else – he took at least 4 biopsies as well and I am waiting for those to come back before I go see him again. Does this indicate that I have liver damage? I do NOT drink alcohol and I do not take any medications (not even Tylenol). I am young, very slim and generally healthy.