CRP in dogs — a rapid marker of inflammation

What is CRP?

CRP is a protein produced by the liver when inflammation or tissue damage is present in the body. Its level in the blood rises within just 4–24 hours of infection, injury or illness, making it useful in veterinary diagnostics.

Normal and elevated CRP in dogs

• Normal level: less than 10 mg/L (in healthy dogs).
• Elevated level: can increase 10 to 1000-fold depending on the disease. The highest level usually occurs 24–48 hours after the onset of inflammation.

When is CRP useful?

CRP is used for:

• Diagnosis — helps in detecting infections (e.g. parvovirus), inflammatory conditions (pancreatitis) or tumours.
• Treatment monitoring — if therapy is effective, CRP falls within 18–24 hours.
• Assessing disease severity — higher CRP often indicates more serious inflammation.

Advantages over other tests

• Faster response: CRP rises before white blood cells.
• More reliable: it is not affected by corticosteroids or other therapies.
• Universal: not linked to breed, age or sex of the dog.

How is it used in practice?

1. First veterinary visit — CRP is measured if the dog shows signs of inflammation (raised temperature, weakness).
2. Follow-up after 24 hours — is the treatment working?
3. Further monitoring — regular measurements until the level returns to normal.

Conclusion

CRP is a reliable and rapid marker of inflammation in dogs. It helps veterinarians to:

• Establish a diagnosis more quickly
• Assess the effectiveness of therapy
• Prevent complications

If your dog has symptoms of infection or inflammation, ask your veterinarian whether CRP measurement is indicated.

Tip: A CRP test is not expensive and can be included in routine analyses when inflammatory processes are suspected.

DVM, PhD, MS, Strahinja Medić