I Recently Have Blood Test Which Shows My SGPT ALT

I recently have blood test which shows my SGPT ALT 132 U/L. I am physically perfect however several month earlier i had regular issue of abdomen pain for which i took diet food for about 40 to 50 days and abdomen pain abolished. Now i have no serious issue of abdomen pain but my SGPT ALT is too high. I dont Drink or smoke. Please suggest what should i do.