TABLE 2.

Factors associated with increased fecal calprotectin concentration

Gastrointestinal diseases	Range of FC increase (µg/g)
Colorectal neoplasia 70	57–133
Colon polyps 68	1–117.7
Colonic diverticular disease 69	<15–60
Bacterial and viral gastrointestinal infections 72	0–994
Gastrointestinal bleeding 71	<20–429
Liver cirrhosis 73	21–357
Irritable bowel syndrome 67	16–294
Microscopic colitis 74	130–480
Proctitis after radiation therapy 75	50–270
Pouchitis 76	55–110
Medication
Non‐steroidal anti‐inflammatory drugs 82	5–520
Proton pump inhibitors 79	50–150
Lifestyle
Obesity 90	5–185
Physical inactivity 87	25–60
Other
Age < 9 years 85	18–213
Age > 65 years 85	14–118
Bowel preparation for colonoscopy 84	51–17,379
Rheumatologic diseases 77	14–513
Perianal disease 91	207–1705
Stoma 88	<150–1130

Abbreviation: FC, fecal calprotectin.