Can calcium oxalate stones in dogs and cats be dissolved with diet alone?

Calcium oxalate stones generally cannot be fully dissolved through diet alone. Your vet will evaluate imaging and urinalysis results to determine the appropriate management approach — speak to your vet for personalised advice.

How soon after treatment should follow-up visits be scheduled?

Follow-up visits for imaging and urinalysis are typically scheduled within weeks to months after surgery or treatment; the exact interval is determined by your vet based on your pet's condition and the treatment used.

What is the approximate cost range for treating urinary stones?

Costs vary widely — conservative management tends to be lower, while surgery and hospitalisation are more expensive. Ask your clinic for a quote and follow your vet's recommendation for which tests to arrange.

How much do the tests and treatment for this condition usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Calcium Oxalate Urinary Stones in Dogs & Cats: Symptoms, Diagnosis & Treatment [2025]

Calcium oxalate stones cannot be dissolved and must be surgically removed; they are common in middle-aged to senior pets and require long-term dietary management to prevent recurrence

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: WSAVA, AAHA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Completely unable to urinate despite repeated straining
•Large amounts of bright red urine or persistent blood clots
•Lethargy, refusal to eat, or persistent vomiting

Arrange a clinic visit as soon as possible (within 24-72 hours)

•Frequent urination but still passing urine, with signs of discomfort
•Crying out or showing obvious pain while urinating
•Persistent licking of the genital area or refusing to use the litter box/toilet

01What Symptoms Indicate a Problem?

Calcium oxalate urinary stones commonly cause blood in the urine and changes in urination habits; your pet may appear uncomfortable or make repeated attempts to urinate.

Urine is pink or bright red — visible blood in urine
Frequent squatting or repeated attempts to urinate in a short period
Signs of pain or vocalising during urination
Noticeable change in frequency or volume of urination
Persistent licking of the genital area or suddenly refusing to use the litter box

Seek emergency care immediately if you notice the following symptoms:

⚠️ Completely unable to urinate despite repeated straining
⚠️ Passing large amounts of bright red blood or persistent blood clots in urine
⚠️ Lethargy, loss of appetite, or persistent vomiting

02How to Assess Abnormalities at Home: Key Observations and When to Seek Emergency Care

These are observations you can record at home that will help your vet understand the progression and prioritise treatment.

Note when symptoms first appeared and how they have changed over time
Record daily water intake and urination frequency, including any instances of no urination
Use your phone to photograph or video the urination process, urine colour, or any blood clots
Weigh your pet weekly and watch for short-term weight changes
If energy levels or appetite decline, arrange a clinic visit as soon as possible

03How Will the Vet Diagnose This? Common Diagnostic Tests

Common tests at the clinic include urinalysis, imaging, and blood work to confirm the presence of stones and check for complications.

Physical examination

palpation to assess abdominal and urinary tract pain

Urinalysis including urine sediment examination to confirm haematuria and crystal type

X-rays

to identify the location, size, and number of stones

CT scan

used for complex cases or precise localisation of stones

Blood biochemistry

to evaluate kidney function and markers of infection or inflammation

Referral to a specialist hospital with X-ray or CT capability is recommended for further evaluation

04Treatment and Home Care After Diagnosis: Medications, Diet, and Management

Treatment may include conservative management, surgery, or prescription diets; regular follow-up after treatment is essential to reduce the risk of recurrence.

Urinary obstruction typically requires emergency treatment and hospitalisation
Manage pain and address infection with medications as directed by your vet
Prescription diets to adjust urine pH and mineral content
Schedule regular follow-up visits for imaging and urinalysis after surgery or treatment
Encourage increased water intake at home and adjust feeding as directed by your vet
If symptoms recur or do not improve, arrange a specialist referral for further evaluation

05What to Prepare Before the Vet Visit: Key Information to Speed Up Diagnosis

List the onset time, frequency, and progression of symptoms

Bring a record of urination and water intake from the past 24 hours

Bring phone photos or videos of urine colour, blood clots, or the urination process

Prepare a list of current medications and supplements

Bring any previous imaging results or examination reports if available

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.