Description
C-reactive protein is one of the most widely used markers of inflammation, helping to detect and monitor infection and inflammatory conditions throughout the body.
About the CRP Test
The CRP test measures C-reactive protein, which the liver releases in response to inflammation. Levels rise quickly with infection, injury or inflammatory conditions and fall as they resolve, making CRP a useful marker for detecting inflammation and tracking response to treatment. While it does not identify the specific cause, it is a valuable, responsive indicator when interpreted alongside your symptoms.
Preparation and turnaround
A quick venous blood sample is taken with no fasting required. Results are usually available within one working day. Because CRP is non-specific, it is best interpreted by a doctor together with your symptoms and, where relevant, other markers such as ESR.
Frequently asked questions
What does a high CRP mean?
A raised CRP indicates inflammation somewhere in the body, such as from infection or an inflammatory condition, but does not identify the exact cause.
How is CRP different from ESR?
CRP rises and falls quickly, making it responsive to change, while ESR changes more slowly. They are often used together.
Is fasting required?
No fasting is needed for the CRP test.
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