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Immunology & cytokines

Calprotectin (fecal) unit converter

Marker of intestinal inflammation; distinguishes IBD from IBS

Also known as: Fecal calprotectin, Faecal calprotectin, Stool calprotectin

Converter

Enter a value in any unit and all other units fill in.

Reference range

UnitAdults
µg/g (stool) = mg/kg0 – 50

Source: From bench to bedside: Fecal calprotectin in inflammatory bowel diseases clinical setting (World J Gastroenterol 2018, PMC) · Last reviewed: 2026-10-14

Note from the source: Manufacturer cut-off 50 µg/g (1 µg/g = 1 mg/kg); higher cut-offs (100-250 µg/g) are used to decide on endoscopy or treatment changes, and the cut-off differs between assays

Frequently asked questions

What is the reference range of Calprotectin (fecal)?

For adults the range is 0 – 50 µg/g (stool) (From bench to bedside: Fecal calprotectin in inflammatory bowel diseases clinical setting (World J Gastroenterol 2018, PMC)). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Calprotectin (fecal)?

Common units are µg/g (stool).

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