My cat has early kidney disease. What phosphorus level is safe?

Question

vet says that tonys SDMA is 13, high normal, early stages of kidney disease. He should be on a diet that is phosphorus restricted & of all the senior diets I've tried he likes best Purina pro plan focus adult 11+ salmon & tuna. Of all the senior diets this has the most phosphorus at 1.5% dry matter & 0.35% as fed. This seems like too much. What's a acceptable amount of phosphorus for tonys condition? We've tried some senior rx diets, he disliked them & vet says it's Not yet tme for a renal Diet. Pet's info: Cat | Domestic Shorthair | Male | neutered | 17 years and 8 months old | 9.5 lbs

Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH · Accepted Answer

I don't have a completely simple answer for you, but I can give you a chart for comparing phosporus levels in different foods. http://catinfo.org/docs/CatFoodProteinFatCarbPhosphorusChart.pdf For maintenance diets, AAFCO minimum for phosphorus is 1.25 g/1000 Kcal (1.25% on a dry matter basis) so, if you are looking for non-prescription diets, there will be none lower than that, so you can try to look for diets that are closer to that value. I hope that was helpful! Thanks for using PetCoach.

My cat has early kidney disease. What phosphorus level is safe?

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