Wow, I hope not, how old is Squamee? Let us know what the blood tests show.
I know that with my civie Chase who had the I131 for HyperT almost a year ago, he had elevated kidney values afterwards, although he has been batting at water all his life. Someone here suggested to give him purified water so his kidneys wouldn't have to work so hard, I ran out and bought a Zero Water purifer and love it. I now use it for everything, the petting zoo, cooking, ice cubes that are clear as a bell, drinking and have become somewhat of a water snob because of it.
Anyway, my mom died last October from kidney failure at the age of 86, she/we had managed her kidney desease for the last 15 years. It isn't necessarily a death sentence.
Funny, thinking about it now mom's kidney specialist never mentioned purified water but that was the first thing I heard about here and it makes alot of sense.