When should I suspect my pet has metabolic acidosis?

If your pet has heavy vomiting or ongoing watery diarrhoea along with low energy, breathing changes or obvious dehydration, an acid-base or electrolyte problem is possible. See a vet promptly for blood tests and follow your vet's advice.

What tests will the vet do at the clinic?

Your vet will usually perform a physical examination, blood tests, a biochemistry profile, urinalysis and imaging if needed, such as X-rays or ultrasound. These help assess acid-base balance, electrolytes and the underlying cause, and guide whether fluids or further treatment are needed.

What can I prepare at home to help the vet assess my pet?

Record when signs started, how often diarrhoea occurs and what the stool looks like, any vomiting, food and water intake and weight changes. Photos of stool or vomit can also help your vet assess the situation and plan tests more quickly.

How long will follow-up be needed after treatment?

Follow-up timing depends on the condition. Mild cases may need blood tests or a clinical check after a few days, while more serious cases may need frequent monitoring or hospital care. Follow the recheck plan and instructions your vet gives you.

How much do the tests and treatment usually cost?

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

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Disease Guide

Metabolic Acidosis in Dogs and Cats: Symptoms, Tests, Treatment & Home Care [2025]

Metabolic acidosis is usually a complication of another illness, so the underlying cause needs to be identified while the acid-base imbalance is corrected.

Take 1 minute to check the symptoms first

Last updated: 2026/01/04

Pethealthmap editorial team

Sources: WSAVA, ACVIM, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Persistent vomiting for more than one day and unable to drink water
•Clearly rapid breathing with ongoing difficulty catching breath
•Obvious dehydration, such as loose skin or sunken eyes

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

•Frequent watery diarrhea for more than one day, but still reasonably alert
•Marked decrease in appetite or repeated refusal to eat for more than one day
•Low activity level, unwilling to play or jump normally

01What symptoms suggest something is wrong?

Metabolic acidosis is often seen in dogs and cats with significant vomiting or diarrhoea. It can cause whole-body signs such as changes in alertness and activity, reduced appetite and abnormal breathing, and tests are needed to confirm acid-base and electrolyte status.

Persistent or frequent diarrhoea, often with watery stools or increased stool frequency
Low energy, sleepiness or slower responses
A clear drop in appetite or repeated refusal to eat
Faster breathing, seeming breathless or working harder to breathe
Reduced activity, reluctance to jump or play

Seek emergency care immediately if you notice the following symptoms:

⚠️ Ongoing vomiting and unable to drink or keep fluids down
⚠️ Blood in the stool or black stools
⚠️ Obvious dehydration, such as poor skin elasticity or sunken eyes

02How can I assess the problem at home? Key observations and when to seek emergency care

Observing and recording key details at home can help your vet understand the condition and timeline more quickly, supporting diagnosis and treatment decisions.

Record how often diarrhoea occurs, stool consistency and whether there is blood or black stool
Note when signs first started, the order they appeared and how long they have lasted
Track daily food intake, water intake and any vomiting
Observe changes in alertness, activity and response to your attention
Weigh your pet and record short-term changes to help assess dehydration or weight loss
Consider taking photos of stool or vomit and bringing them to the clinic for your vet to review

03How will the vet diagnose it? Common tests

Your vet will start with a physical examination and may use blood tests and imaging to assess acid-base balance, electrolytes and the primary cause. Further testing or referral may be recommended if needed.

Physical examination

assess alertness, heart rate, breathing and degree of dehydration

Blood tests

complete blood count to check for signs of infection or anaemia

Biochemistry profile

assess liver and kidney function, electrolytes and acid-base status

Urinalysis

provide additional information about kidney function and metabolism

Diagnostic imaging (X-rays or ultrasound)

check for abdominal or chest problems

04What treatment and care are needed after diagnosis? Medicines, diet changes and care guidance

Treatment focuses on correcting dehydration and electrolyte problems and treating the underlying disease. After treatment, blood values and clinical improvement need to be monitored, with follow-up visits or hospital care arranged depending on the situation.

Intravenous fluids to correct dehydration and electrolyte imbalance and stabilise circulation
Oxygen support if needed to improve breathing
Medication or other treatment targeted to the underlying cause, such as infection or intestinal disease
Diet adjustment and gut supportive care to reduce strain on the digestive tract
Follow-up visits to monitor blood results, electrolytes and changes in clinical signs
Referral or hospital monitoring if the condition is unstable or specialist assessment is needed

05What should I prepare before seeing the vet? Key details that help identify the cause

Write down when signs began, the timing of each episode and details of any changes

List recent medicines, vaccines, supplements and known food allergies

Prepare records of food and water intake from the past three days for your vet

Take photos or videos of diarrhoea or vomit to show at the clinic

Bring previous test reports or imaging results, if available, for comparison

Call ahead to book with a clinic that can provide blood biochemistry testing and imaging

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.

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