What is pyruvate kinase deficiency in dogs and cats?

This is an inherited defect in blood cell energy metabolism. It makes red blood cells more likely to break down, causing anaemia and related signs. If you are concerned, discuss appropriate testing with your vet.

How does a vet test for or confirm this disease?

Your vet will usually start with a CBC, biochemistry profile, and blood smear. Further blood function tests or genetic testing may be recommended to support the diagnosis.

What is the prognosis for an affected pet?

The prognosis varies depending on the individual pet and disease course. Many pets can maintain quality of life with supportive care and regular monitoring, so discuss a long-term follow-up plan with your vet.

What information should I prepare before the vet visit?

It helps to record when signs started and how they changed, recent appetite and weight information, a medication list, videos you have taken, and any previous test reports.

How much do the tests and treatment usually cost?

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

Disease Guide

Pyruvate Kinase Deficiency in Dogs and Cats: Anaemia Signs, Blood Tests & Care [2025]

Inherited enzyme deficiency causing haemolytic anaemia

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: ACVIM, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Sudden collapse or persistent inability to stand or get up
•Obvious difficulty breathing or rapid breathing that does not resolve
•Pale or noticeably yellow mucous membranes with poor responsiveness

Schedule a Clinic Visit Soon (within 24–72 hours)

•Persistent lethargy and decreased activity level
•Reduced appetite lasting more than one day with clear reluctance to eat
•Noticeable change in stool color or frequency

01What Signs Suggest Something Is Wrong?

This condition mainly causes tiredness, breathing changes, and digestive signs related to haemolytic anaemia, with severity varying between pets.

Low energy, tiring easily, or reduced activity levels
Weakness or noticeably worse panting after exercise or activity
Reduced appetite, diarrhoea, or gradual weight loss
A racing heartbeat or clearly increased breathing rate
Jaundice (yellowing) of the skin or whites of the eyes, or pale gums and mucous membranes
If you notice these abnormalities, arrange a blood test assessment as early as possible

Seek emergency care immediately if you notice the following symptoms:

⚠️ Seek veterinary care promptly if you notice obvious jaundice or pale mucous membranes
⚠️ Immediate assessment is needed if your pet cannot keep eating or has rapid breathing

02How Can You Judge Abnormal Signs at Home? Key Observations and Emergency Criteria

Careful home observation and records can help your vet understand the disease course and assess severity.

Record your pet's energy level and activity changes every day, including the time and situation
Weigh your pet daily and note the values and trends
Track bowel movement frequency, stool appearance, and any change in urine colour
Record appetite and food intake changes, including periods of refusing food
Use your phone to film unusual activity, breathing, or behaviour to show the vet
Seek urgent veterinary care if your pet develops obvious jaundice, rapid breathing, or cannot stand

03How Will the Vet Diagnose It? Common Tests

Common in-clinic tests are used to confirm anaemia, identify evidence of haemolysis, and assess organ function.

Physical examination

assessing mucous membrane colour, listening to the heart and lungs, and checking overall condition

Complete blood count (CBC)

evaluating red blood cell count, haemoglobin, and the severity of anaemia

Biochemistry profile

checking liver and kidney function and related enzyme changes

Urinalysis and blood smear

looking for signs of haemolysis or abnormal cell appearance

Diagnostic imaging (X-rays, or CT when needed)

assessing changes in the chest, abdomen, or organs

04How Is It Treated and Managed After Diagnosis? Medication, Diet, and Care Guidance

Treatment is usually centred on supportive care and cause-directed management, with regular monitoring of blood values and organ function.

Plan supportive care and any necessary specific treatment based on test results
Adjust the diet to maintain nutrition and support the overall treatment plan
Schedule regular rechecks to monitor CBC and biochemistry changes
Observe activity, appetite, urination, and bowel movements at home, and keep records for your vet
When needed, discuss long-term monitoring and testing with a specialist hospital experienced in blood disorders

05What Should You Prepare Before Seeing the Vet? Key Details That Help Identify the Cause

Record when the signs started, how they changed, and how often they occur

Prepare a brief summary of recent appetite, weight, urination, and bowel movement records

List all current medicines, supplements, and prescriptions

Bring recent blood test or imaging reports, if available, for comparison

Film signs such as breathing changes or reduced activity and bring the videos to the appointment

It is best to call ahead for an appointment or choose a clinic that can perform blood tests

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.