The indicators for kidney issues (or kidney failure as the vet calls it) were a little better but not so much better that he can go home. She said it was the practice that if the 2nd test shows a a number that is comparable, then they might allow him home. We are of course hoping for the indicators to improve in the days to come. The vet Dr S said his kidneys were very very very very bad. I think 4 very bads are just the same as 1 very bad though. I guess he had to tell me the naked truth so I do not have unreasonable expectations of what medicine can do. :(
I read that Persian cats were predisposed to kidney stones and some may even have them in the kidneys from young, about 30%. This is no consolation of course. It would be good to know from the very beginning though.