iT IS POSSIBLE THAT THE FLEA AND HEARTWORM MEDS MAY HAVE SOMETHING TO DO WITH THE RESULTS.    i WOULD WAIT FOR A COUPLE OF WEEKS TO HAVE THE PRE AND POST BILE ACID DONE.  tHE WAY i HAVE THE TEST DONE IS FAST OVERNIGHT, GO IN FIRST THING IN THE MORNING FOR A BLOOD DRAW, FEED AN ADULT FOOD UP TO TWO TABLESPOONS RIGHT AFTER, WAIT EXACTLY 2 HOURS AND HAVE THE POST BLOOD DRAW.   
 iF THE RESULTS ARE HIGH START HIM ON A LOW PROTEIN DIET LIKE rOYAL CANINE hEPATIC. YOUR VET CAN PRESCRIBE LACTULOSE AND MILK THISTLE THAT DOESNT CONTAIN ALCOHOL.  I GIVE MY LIVER COMPROMISED DOG LIQUID HEPPATO, LACTULOSE AND SOME VITAMINS.  I WOULD DO THE TESTING BEFORE ANYTHING AND SEE IF IT COMES OUT HIGH.  
 tHE BEST PLACE NEAR YOU THAN WOULD BE CORNELL UNIVERSITY. 
MANDY     |