CRP and inflammatory bowel disease: Due to the acute phase response in IBD patients, significantly increased concentrations of proteins involved in coagulation and fibrinolysis (such as fibrinogen and plasminogen), components of the complement system, proteinase inhibitors (α1-antitrypsin, α1-antichymotrypsin), transport proteins (haptoglobin, ceruloplasmin), and C-reactive protein (CRP) or ferritin are found in both UC and CD [5].