What is a hypercoagulable state in dogs and cats?

A hypercoagulable state means the blood has an increased tendency to form clots, which can block blood flow and affect organ function. Clinical signs vary depending on which area is affected, and a veterinary examination with blood tests is needed to confirm the diagnosis. Speak to your vet to understand the underlying cause and next steps.

What tests does the vet usually carry out?

Common tests include a physical examination, blood coagulation panel, biochemistry, urinalysis, and imaging (X-ray, ultrasound, or CT/MRI where needed) to identify the source of clotting and assess which organs are affected.

What should I monitor at home?

Record the time of onset, resting respiratory rate and effort, changes in activity, appetite, and elimination. A short video for your vet can also be very helpful for a quick assessment.

Is a hypercoagulable state contagious or hereditary?

A hypercoagulable state is not a contagious disease. Whether hereditary factors are involved depends on the specific underlying condition. It is often caused by another disease or drug effects — your vet will evaluate the relevant history and test results.

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

Hypercoagulable State in Dogs & Cats: Symptoms, Diagnosis & Treatment [2025]

Hyperlipidaemia can be primary (hereditary) or secondary to conditions such as hypothyroidism or diabetes mellitus. It may lead to pancreatitis and neurological signs. A low-fat diet and managing the underlying condition are key to treatment.

Take 1 minute to check the symptoms first

Last updated: 2025/01/05

Pethealthmap Editorial Team

Sources: ACVIM, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek emergency care immediately

•Obvious difficulty breathing or inability to breathe normally
•Sudden weakness in the hind limbs, inability to stand or walk
•Fainting, prolonged loss of consciousness, or unresponsive to stimulation

Schedule a clinic visit soon (within 24–72 hours)

•Faster breathing or panting but still able to move briefly
•Significantly reduced activity, persistent lethargy, or weakness
•Abdominal distension or obvious discomfort when touched

01What Symptoms Indicate Something Is Wrong?

A hypercoagulable state often affects breathing and circulation. Symptoms can appear suddenly and worsen quickly — monitor your pet's breathing and activity level closely.

Difficulty breathing or visibly laboured breathing (dyspnoea)
Changes in respiratory rate or rapid breathing (tachypnoea)
Sudden drop in activity or reluctance to move
Visibly distended abdomen or a fluid-filled feel on palpation
Localised or generalised pain or persistent restlessness

Seek emergency care immediately if you notice the following symptoms:

⚠️ Severely laboured breathing or near respiratory arrest
⚠️ Sudden hindlimb paralysis or inability to move the back legs
⚠️ Collapse or marked change in consciousness

02How to Assess Your Pet at Home: Observation Tips and Emergency Warning Signs

Recording key observations before your vet visit helps the veterinarian quickly assess the progression of the condition and arrange the necessary tests.

Note the time of onset and the sequence in which symptoms appeared and changed
Measure and record resting respiratory rate and whether breathing is laboured
Observe mental status: alert, lethargic, or unresponsive
Record any changes in appetite and water intake
Note changes in frequency, colour, or consistency of urination and defecation
Take a short video or photos to capture your pet's activity level and gait
If you notice any emergency warning signs, seek urgent veterinary care immediately

03How Will the Vet Diagnose the Condition? Common Diagnostic Tests

At the clinic, the vet will focus on a physical examination along with imaging and blood tests to identify the source of the coagulation abnormality and assess the extent of organ involvement.

Full physical and neurological examination to assess clinical signs

Blood tests including coagulation markers (e.g. clotting times)

Biochemistry panel to assess liver, kidney, and other organ function

Urinalysis to look for infection or other contributing causes

Cardiac ultrasound to assess for cardiac thrombus or heart function

Advanced imaging (X-ray, CT/MRI) to evaluate thrombosis or organ changes

Referral to a specialist hospital for further evaluation when necessary

04How to Treat and Care for Your Pet After Diagnosis: Medication, Diet and Home Care Guide

After treatment begins, administer medications as directed, attend regular follow-up appointments, and combine home monitoring with lifestyle management to reduce the risk of complications.

Begin medication as directed by your vet and attend scheduled follow-up visits
Have coagulation values and organ function checked regularly
Adjust diet and manage body weight to reduce the risk of complications
Monitor breathing, activity level, and signs of pain at home
Schedule imaging or blood recheck appointments on time to evaluate treatment response
If symptoms worsen, return to the vet promptly or seek specialist advice

05What to Prepare Before the Vet Visit: Key Information to Help Your Vet Act Quickly

Note the time of onset, how symptoms have progressed, and all signs observed

Write down recent changes in appetite, water intake, and bowel or bladder habits

List all current and recent medications and supplements

Use your phone to record a video of symptoms (breathing, gait, abdominal appearance)

Bring any previous test reports or imaging results if available

If possible, call the clinic in advance to describe the condition and make an appointment

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.