I Am A 61 Year Old Male And Run 3

I am a 61 year old male and run 3 times a week and cycle 3 times a week. My last blood test in Sept. 2016 showed AST and ALT in normal range. I tried DHEA in Dec. 2016 to increase testosterone (50mg once daily) for less than a month when a regularly scheduled blood test showed highly elevated AST and ALT and I stopped the DHEA immediately. My ALP, GGT, bilirubin, and albumin were normal in Sept. 2016 and still normal in the recent blood test. How long will it take for my liver enzymes to recover to normal ranges.