Quote Originally Posted by catfamily
Why would you think their may be others develping them.
Just from everyone using the CD formula when not needed?
I have been told that c/d is a fine food for almost any cat. But I guess some cats would form the calcium oxylate crystals (not the struvite, which c/d helps prevent) no matter what food they are on. So I always like to test for crystals whenever there is a problem, even though the double test costs more.

I already booked his "reservation" at the vet office for the 10 days re-test urinalysis! I have NEVER been able to get a urine sample at home, no matter how hard I try.