Bladder stones in cats
Cats form struvite and calcium oxalate stones. Some dissolve with diet; others need removal.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Straining
- Blood in the urine
- Peeing outside the box
- Frequent trips
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
X-rays and urinalysis find most stones. [2]
How it's treated
Struvite stones may dissolve with diet. Calcium oxalate stones usually need surgery. [2]
What it costs to diagnose and manage
| Item | Typical US price | Src |
|---|---|---|
| Diagnosis (exam and tests) | $200–$500 | [1] |
| Surgery | $1,500–$3,000 | [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
Stones can come back, so follow-up urine checks matter. [2]
Common questions
What is bladder stones in cats?
Cats form struvite and calcium oxalate stones. Some dissolve with diet; others need removal.
What are the signs of bladder stones?
Common signs include: straining, blood in the urine, peeing outside the box, frequent trips.
How do vets diagnose bladder stones?
X-rays and urinalysis find most stones.
How is bladder stones treated?
Struvite stones may dissolve with diet. Calcium oxalate stones usually need surgery.
How much does bladder stones cost to treat?
Diagnosis (exam and tests): $200–$500; Surgery: $1,500–$3,000. 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.