Is my 6-month kitten's high BUN/Creatinine a sign of kidney disease?

Question

Hi, my vet told me my kitten had an abnormal blood result that indicated possibility of kidney disease. He is only 6 months old. His BUN is 30.3 & his Creatine is 1.6. From what I have read online those fall within the normal range for cats, unless it is different for 6 month old kittens vs adults? He has been given antibiotics even though his urine test was negative for signs of infection. Should I be concerned about my 6 month kitten having kidney disease? Pet's info: Cat | Domestic Mediumhair | Male | 6 months and 21 days old | 5 lbs

Destini R. Holloway, DVM · Accepted Answer

Every lab has different reference ranges, so according to the lab that your cats blood was run in, the BUN and CREA are considered to be mildly elevated. However, unless your cat has a low specific gravity (concentrating ability of the kidneys), we have to assume that the BUN and CREA levels are not indicating any kind of kidney failure. In other words, if the kidneys are concentrating normally, and the pet is asymptomatic, then the BUN and CREA levels should simply be rechecked at a later date or another more sensitive test called the SDMA test should be done to clarify what is really going on with your pets kidneys. So based on the information you have provided we cannot say if Frodo has true kidney disease, but if his urine test was negative for bacteria then no infection is present. Ask your vet about Frodo's specific gravity and if that was normal or not. If it was normal, then go forward with the SDMA test to confirm that the kidneys are ok. If you need further help regarding your pet Frodo's case, since this can be a bit complicated to explain on the forum, please feel free to request a private consultation with either myself or another expert here and we will be more than happy to assist you further. I hope that this helps and best wishes with your pet Frodo moving forward! Take care: )

Is my 6-month kitten's high BUN/Creatinine a sign of kidney disease?

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