Im 17 years old and i got a blood test done and everything that was tested for came back to be in perfect condition, except one thing, i had slightly elevated ALT liver enzymes. The second blood test my ALT level stayed consistent at 71. What could be the cause of this elevated liver enzyme? I go in for another blood test in a few weeks to check on it. I know there is a wide range of possibilities, i just want to know if anyone has specific information about ALT levels of or around 71.

Thanks.