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My cat's SDMA is up, but other kidney values are down. Is this stable?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 19 years and 3 months old | 9.5 lbs

tony eats Rx hills K/D & I do labs every 2-3mths to check renal values. Today his SDMA is up from 17 to 21, creatinine down to 1.9 from 2.0 & BUN down from 41 to 37. He’s gained a little weight, he eats well. My vet feels this is stable even tho SDMA is up& I’d like to know ur opinion. Is there anything I can do to help keep this value low or is it possible I contribute to the increase b/c I often sprinkle just a bit of a freeze dried cat treat on top his kidney food To help him finish his meals

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on April 2nd, 2019

I would probably call this stable as well - some values are up while others are down. While these parameters are related to kidney function they do not directly measure kidney function and there are other things that could make the values vary slightly day to day. While a kidney diet can slow the progression of disease I doubt that adding a little cat treat to the food has made much of a difference and it is more important that Tony has a good appetite.

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