hi sending a link to another great site.....
http://www.felinecrf.com/
hi sputan and welcome to our cat forum. I'm afraid we aren't Vets here, only pet owners like yourself, we do share information that we have read or gone thru with our own cats over the years.
I'm sorry I really can't answer your question on creatinine or reducing it. I'm so sorry your young kitty is going thru this terrible disease, I lost one 5 yrs ago to it also.
I like you didn't know much about the disease than. Since than I have found alot of good info on several sites.
I will give you this site if you haven't found it already, it is excellent. be sure to follow all the links on the left hand side.
please return anytime, we'll try and answer what we can, we're also here to learn from each other.
best to you and kitty ♥
http://www.felinecrf.org/