Chronic kidney disease in cats
Chronic kidney disease (CKD) is one of the most common illnesses in older cats. The kidneys slowly lose their ability to filter waste and hold onto water.
Last updated: October 2026 · 3 sources · see sources
Signs to watch for
- Drinking and peeing more
- Weight loss
- Poor appetite
- Vomiting
- Dull coat
- Bad breath
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
Bloodwork (creatinine, BUN and SDMA), a urinalysis and blood pressure checks are used to diagnose and stage CKD. [2][3]
How it's treated
Care can include a kidney diet, fluids under the skin, anti-nausea and appetite medicines, phosphate binders and blood pressure medicine. [2][3]
Medicines your vet may mention: Amlodipine, Cerenia, Mirtazapine (Mirataz), Semintra. We don't list doses; your vet will decide what fits your pet.
What it costs to diagnose and manage
| Item | Typical US price | Src |
|---|---|---|
| Diagnosis (exam and tests) | $200–$500 | [1] |
| Ongoing treatment, per month | $200–$500 | [1] |
| Ongoing treatment over a year (monthly range × 12) | $2,400–$6,000 | [1] |
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Many cats live for years with CKD, especially when it's found early. [2][3]
Common questions
What is chronic kidney disease in cats?
Chronic kidney disease (CKD) is one of the most common illnesses in older cats. The kidneys slowly lose their ability to filter waste and hold onto water.
What are the signs of chronic kidney disease?
Common signs include: drinking and peeing more, weight loss, poor appetite, vomiting, dull coat, bad breath.
How do vets diagnose chronic kidney disease?
Bloodwork (creatinine, BUN and SDMA), a urinalysis and blood pressure checks are used to diagnose and stage CKD.
How is chronic kidney disease treated?
Care can include a kidney diet, fluids under the skin, anti-nausea and appetite medicines, phosphate binders and blood pressure medicine.
How much does chronic kidney disease cost to treat?
Diagnosis (exam and tests): $200–$500; Ongoing treatment, per month: $200–$500; Ongoing treatment over a year (monthly range × 12): $2,400–$6,000. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.