I am looking for a vet or qualified vet tech to offer a second opinion here. I rescued a cat about a year ago. A male kitty.."max". Max is about 2 years old. My vet found that his ALT numbers were high (239) when we did blood work about a year ago. All other blood work seemed normal. We thought maybe he ate something in the wild to elevate liver. We started max on Denamarin as a Liver supplement. We tested Max over the year and his ALT dropped to 167 on Denamarin. Normal is below 100. We decided to take him off Denamarin for a few weeks to see what would happen to ALT. ALT off Denamarin went back to 206. So we decided to get a second opinion on Liver ALT. Meanwhile Max is perfectly normal, eating/drinking well, gaining weight, normal stool and urine, super happy cat. The second vet decided that it would be good to just run a infectious disease panel on Max to see if maybe an underlying issue was causing high ALT. Everything came back normal recently on that panel. I mean everything from thyroid, to heart worm, to FELIV, to corona....etc. all normal. The only funky thing on this blood work was a Toxoplasmosis screening where IgG Antibody is 1:512 (<1:64) and the IgM is "negative" -- I dont know what 1:512 means but i heard this is high. this sounds like Max had exposure to Toxo in the past but doesn't have it now correct? Reason I ask is we have 2 other cats and everyone seems normal but I just want to be sure. Also, one vet thought I should put Max on Clindamycin for 30 days (harsh side effects I am reading) just to be safe. But from everything I am reading the presence of an antibody in the IgG is "good" at high and shows immunity and that he successfully fought off the Toxo in the past. Just like if you had a vaccine to something the titer might be high showing immunity. He is acting perfectly normal so we hate to give him a harsh medication just to be extra certain. All this doesn't answer the high ALT numbers though. Do you think the vet wanted to try Clindamycin with the hope it would make the ALT normal? Seems that everything I am reading is that elevated ALT is not a direct tie to past Toxo exposure. The two seem unrelated so why would we use Clindamycin?. More than likely high liver ALT is due to "inflammation" somewhere and that maybe another type of antibiotic should be tried. Should I be concerned about Toxo at all at this stage or just focus on trying to get the liver ALT down? Please, only respond if you have had experience with this and can answer from a vet perspective. Thank you!