Table 2: Mean (SD) levels of calprotectin in IBD patients with or without IBS-like symptoms using a cutoff of <100  g/g.

CalprotectinIBS positiveIBS negative value

Ulcerative colitis

<100  g/g 0.14
40.5 (36.9)23.7 (26.4)
≥100  g/g 0.26
808.3 (353.6)562 (446.8)

Crohn’s disease

<100  g/g 0.17
5.3 (4.6)19.4 (16.0)
≥100  g/g <0.01
872.7 (287.7)293.7 (191.9)

SD: standard deviation, IBD: inflammatory bowel disease, and IBS: irritable bowel syndrome.