CRP is produced by the liver in response to inflammation and rises rapidly when an inflammatory process begins. Levels fall quickly once the trigger resolves, making CRP one of the most useful markers for both detecting and tracking inflammation.
This test is used to evaluate suspected bacterial infections, monitor disease activity in autoimmune conditions like rheumatoid arthritis and inflammatory bowel disease, assess response to anti-inflammatory therapy, and investigate unexplained fever or pain. The standard CRP test is distinct from high-sensitivity CRP (hs-CRP), which is used for cardiovascular risk assessment. Sample type is serum.