CRP and colitis: C-reactive protein (CRP) is measured more often than ESR and does not show a non-specific increase with age [11] and for this reason, a CRP of > 30 mg/L has been incorporated in the modified Truelove and Witts criteria endorsed by both the European Crohn’s and Colitis Organisation (ECCO) and the British Society of Gastroenterology (BSG) [9, 10].