What is disseminated intravascular coagulation (DIC)?

DIC is not a standalone disease — it is a breakdown in the balance between clotting and bleeding that occurs in response to another serious underlying condition, commonly infection, cancer, or critical illness. A vet will need to perform blood tests and a coagulation panel to confirm the diagnosis.

How does a vet diagnose a clotting disorder in dogs and cats?

Diagnosis relies primarily on blood tests, including a complete blood count, clotting times, and related coagulation markers. Biochemistry, urinalysis, and imaging may also be used to identify the underlying cause.

What should you do first if you notice your pet is bleeding?

Record when the bleeding started and how often it occurs, take photos or videos if possible, keep your pet calm and limit movement, then contact your vet or take your pet to a facility equipped to handle blood transfusions and coagulation testing as soon as possible.

What is the prognosis for disseminated intravascular coagulation?

Prognosis depends on the underlying cause and the severity of bleeding. When the triggering condition is identified and treated promptly, combined with appropriate supportive care, outcomes can improve. Follow your vet's recommendations for monitoring and follow-up.

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

Disseminated Intravascular Coagulation (DIC) in Dogs & Cats: Symptoms, Tests & Treatment [2025]

Disseminated intravascular coagulation (DIC) is a serious clotting disorder that typically develops secondary to conditions such as sepsis or cancer. It causes simultaneous clotting and bleeding throughout the body, requiring urgent treatment of the underlying cause alongside supportive care for coagulation.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap editorial team

Sources: ACVIM, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Heavy or uncontrollable external bleeding continues
•The gums or mouth are noticeably discolored and breathing is difficult
•Sudden fainting, loss of consciousness, or collapsing from weakness

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

•Mild pinpoint bleeding or bruising spots continue to appear
•Energy and appetite are reduced, but the pet can still move around briefly
•Urine or stool contains blood or has a clearly abnormal color

01What symptoms indicate something is wrong?

DIC most commonly presents as unexplained bleeding and generalised weakness, which may be accompanied by organ dysfunction or changes in breathing. Early signs can be subtle but the condition progresses rapidly — pay close attention to any ongoing or recurring bleeding.

Pinpoint or large bruise-like patches on the skin, gums, or tongue
Blood in the urine or faeces, or dark tarry stools
Persistent dripping or flowing blood from the nostrils or ear canals
Lethargy, markedly reduced appetite, and decreased activity levels
Rapid breathing, general weakness, or difficulty standing

Seek emergency care immediately if you notice the following symptoms:

⚠️ Heavy or continuous bleeding that cannot be stopped
⚠️ Noticeably pale or discoloured gums or mucous membranes accompanied by breathing difficulty
⚠️ Sudden collapse, loss of consciousness, or inability to stand

02How can you assess the situation at home? What to watch for and when to go to emergency

Monitoring and documenting key information at home helps your vet quickly assess urgency and identify possible causes. Keep a detailed record of when bleeding started and how it has changed, and save any photos or videos you take.

Note the time you first noticed the bleeding and how often it occurs
Take photos or videos of the affected areas and any bleeding behaviour
Track appetite, water intake, and activity levels daily
Record the colour of urine and faeces, whether blood is present, and any changes in frequency
List all current medications, supplements, and any recent environmental exposures
If symptoms worsen or heavy bleeding occurs, go to an emergency or specialist veterinary clinic immediately

03How will the vet diagnose this? Common diagnostic tests

At the clinic, your vet will perform a thorough physical examination along with laboratory tests, using coagulation panels and imaging to identify the cause of bleeding and determine whether supportive measures such as a blood transfusion are needed.

Physical examination

assessing bleeding sites, mucous membrane colour, and vital sign stability

Blood tests

including a complete blood count and coagulation panel (e.g. PT, aPTT)

Biochemistry panel

evaluating liver, kidney, and other organ function

Urinalysis

checking for haematuria or protein abnormalities

Imaging (X-ray, ultrasound, or CT)

assessing for internal bleeding or an underlying primary lesion

Tissue or bone marrow sampling if needed to identify the underlying disease

It is recommended to visit a facility capable of performing coagulation testing and blood transfusions

04How is DIC treated and managed? Medications, dietary adjustments, and home care

Treatment is primarily supportive, with simultaneous management of the likely underlying cause and close monitoring of coagulation and blood cell parameters. Regular rechecks and diligent home observation are essential after discharge.

In-hospital blood or blood product transfusions with close monitoring of vital signs and coagulation values
Stabilising fluid and electrolyte balance and oxygenation, with supplemental oxygen if needed
Targeted or supportive treatment for the underlying disease, with ongoing monitoring of response
Short-term dietary and activity restrictions to minimise the risk of re-bleeding
Regular recheck appointments after discharge to monitor coagulation function and blood cell counts
Continued home monitoring of bleeding, appetite, and medication response
Return to the clinic immediately — or go to the nearest emergency facility — if symptoms worsen or danger signs appear

05What should you prepare before the vet visit? Key information to help your vet quickly identify the cause

Prepare a record of when symptoms started, how they have progressed, and key observations

Bring photos and videos of the bleeding sites or related behaviours for the vet to review

Write down a log of diet, urination, defecation, activity levels, and medication use over the past week

Bring a complete list of current medications, vaccinations, and supplements, along with any previous test results

If available, bring recent blood test or imaging reports for comparison

Transport your pet in a secure carrier or with a supportive wrap to minimise movement and reduce the risk of worsening bleeding

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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