I AM A 42 Y.O. MALE WHO RECENTLY HAD SOME LAB WORK DONE (CBC,COMPLETE METABOLIC PANEL AND TOTAL CHOLESTEROL) EVERYTHING CAME BACK NORMAL EXCEPT MY ALT LEVEL WHICH WAS 65.THE DOCTOR TOLD ME THE AST LEVEL WAS NORMAL BUT DIDN'T GIVE ME A NUMBER.I CONSIDER MYSELF IN VERY GOOD SHAPE, I EXERCISE 4-6X WEEK ,I EAT WELL AND I AM ON NO MEDICATION. I AM A MODERATE DRINKER CONSUMING 2-4 DRINKS A DAY ON AVERAGE,SOME DAYS NONE AT ALL SOME DAYS A LITTLE MORE.I AM VERY CONCERNED AND AM FOLLOWING UP WITH MORE LAB WORK, A HEPATIC PANEL AND HEPATITIS B AND C.WHAT SPECIFICALLY IS THE ELEVATED ALT LEVEL SIGNIFICANT FOR?