CRP and inflammatory bowel disease: Regarding the laboratory data of the included IBD patients, the medians (IQR) of their fecal calprotectin, CRP, and ESR levels were 150.00 (60.00—582.30) μg/g, 7.10 (3.95—11.40) mg/L, and 22.50 (10.00—50.00) mm/hour, respectively.