Calprotectin Is a Useful Tool in Distinguishing Coexisting Irritable Bowel-Like Symptoms from That of Occult Inflammation among Inflammatory Bowel Disease Patients in Remission

Table 2

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

Calprotectin	IBS positive	IBS negative	𝑃 value
	Ulcerative colitis
<100 𝜇g/g	𝑛=9	𝑛=27	0.14
	40.5 (36.9)	23.7 (26.4)
≥100 𝜇g/g	𝑛=6	𝑛=12	0.26
	808.3 (353.6)	562 (446.8)
	Crohn’s disease
<100 𝜇g/g	𝑛=3	𝑛=9	0.17
	5.3 (4.6)	19.4 (16.0)
≥100 𝜇g/g	𝑛=3	𝑛=9	<0.01
	872.7 (287.7)	293.7 (191.9)

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