C Reactive Protein (CRP)

C reactive protein (CRP) is a marker of inflammation and increases with active disease. It is a produced by the liver during episodes of acute inflammation or infection.

CRP returns to normal more quickly than the ESR during treatment of IBD.

CRP is also used to assess heart attack risk but at levels that are much lower than those measured to monitor IBD.

Note that neither ESR nor CRP is a measurement of gastrointestinal inflammation specifically. Yet they are still useful for monitoring your IBD.
Normal value: under 8.0 mg/L