My cat's creatinine dropped with early kidney disease. Is this normal?

Question

Is it common, or known, for a cat's criatinine level to drop during the 1st stage of chronic kidney disease? I am asking because this is the case with my 14 year old cat who was diagnosed 6 months ago at a criatinine level of 2.5. Tonight he tested at just 1.8. And his bun level was only slightly elevated at 44. If this is not something that is common, then I can only attribute it to the new food I put him on. Pet's info: Cat | Domestic Mediumhair | Male | neutered | 13 years and 8 months old | 7.5 lbs

Linda G, MS, DVM · Accepted Answer

Hello. It is possible that the new food is helping the creatinine levels, but regardless of the reason, this is good news. Remember, blood work is a snapshot of what is happening at the moment the blood was drawn. Twilight may have been a little more dehydrated at the last blood draw, & creatinine is a very sensitive marker of kidney function, more so than the BUN. So, be happy that the number is better today. Thanks for using Petco Pet Education Center, formerly Petcoach.

My cat's creatinine dropped with early kidney disease. Is this normal?

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