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Cat's BUN and creatinine across three blood tests: what tests, food and supplements help her kidneys?

What they asked

Mocha has had three tests over the past 5 months, and the results were as follows in order:
First test: Urea 53 / BUN 24.7 / Scr 2.2
Second test: Urea 59 / BUN 27.57 / Scr 1.8
Third test: Urea 79 / BUN 36.91 / Scr 1.9 The first and second tests were 2 months apart, and the third test was after 4 months. Moka’s diet is 40-50 grams of Royal Fit dry food per day and one tablespoon of Wanpy brand wet food (pouch) per day. He drinks very little water; I force about 40-70 cc of water into his every day. He has one bowel movement and 2-3 urinations per day. Now, to make sure her kidneys are healthy, what should I do? What tests and paraclinical actions are needed, and what foods and supplements does she require?

Dylan Wilson, DVM Verified VetKY license 293504

Sorry to hear about your cat. I would say as much wet food would be beneficial for hydration. You can feed him about 250 calories a day. The back of cans and bags will show you the kcal for the can or kcal by the weight. There are some hydration food toppers you can find online as well. There are formulated chronic kidney disease foods that most of the major brands have. I would try to get a blood pressure result in his checkups to make sure that is not the cause of the kidney strain.

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