I am wondering of anyone here has ideas for cat food that might work. My cat has absorption issues, so I did a sensitivity test for her because the few culprits I knew were not all of it. She is highly reactive to soy, chicken, beef, rice, folic acid. Are there any foods out there that are free from all of these? I was already avoiding soy which is challenging enough. It would be an extra bonus to find something low phosphorus. She is older, and my other young cat I adopted with ckd.