Faecal Calprotectin Test
A stool test that shows inflammation in the bowel, helping tell IBD from IBS.
Quick Summary
To check for bowel inflammation in people with ongoing diarrhoea or tummy pain.
Calprotectin, a protein released by white blood cells.
Avoid anti-inflammatory painkillers for a few days if possible.
Overview
A normal result makes inflammatory bowel disease unlikely.
It's also used to monitor IBD.
What It Measures
Calprotectin
Bowel inflammation marker.
How It's Performed
- 01
Collect
A small stool sample.
- 02
Return
In the container provided.
- 03
Results
Guide whether colonoscopy is needed.
Reference Ranges
Note: Normal ranges vary by laboratory. Consult your report for the specific reference used.
| Parameter | Typical Range (Adult) | Units |
|---|---|---|
| Calprotectin | Below 50 | µg/g |
Interpreting Results & Next Steps
Discuss with Doctor
Your doctor will explain what your result means and what happens next.
If values are High:
High levels suggest bowel inflammation such as Crohn's or colitis.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Calprotectin Stool Test(opens in a new tab) · MedlinePlus, US National Library of Medicine