Calprotectin Test

A single stool marker for gut inflammation, commonly used to help distinguish between irritable bowel syndrome and inflammatory bowel disease when investigating ongoing gut symptoms.

  • At-home test
  • Doctor reviewed
Sample
Stool
Collection
At-home stool sample by post
Results in
1–2 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • Faecal calprotectin

Test specifications

Provider
Selph
Sample type
stool
Collection method
at-home stool sample by post
Turnaround time
1–2 days
Biomarkers tested
1
At-home test
Yes
Doctor reviewed
Yes
Gender focus
Both

What's tested

1 biomarker as listed by Selph.

Gut Inflammation

  • Faecal calprotectin

About this test

The Calprotectin Test measures faecal calprotectin, a protein released by white blood cells that rises with gut inflammation. It is commonly used to help distinguish between irritable bowel syndrome, which does not raise calprotectin, and inflammatory bowel disease and other causes of gut inflammation, which do.

Against the two calprotectin tests we track, its £83 price is close to the £85 median, and it is considerably cheaper than Blue Horizon Medicals' Faecal Calprotectin test at £146.25. Its 1 to 2 day turnaround is also notably faster than most of Selph's other stool-based tests, several of which take 5 to 8 days.

It scores well on clarity and documentation and Trust Signals, and its Clinical Depth score reflects that it is a single-marker test doing exactly what it sets out to do rather than being penalised for narrow coverage. Results and Follow-up benefits from doctor review of every result.

Who is it for?

This suits you if you have ongoing gut symptoms such as bloating, diarrhoea or stomach pain and want a marker that can help distinguish inflammatory causes from non-inflammatory ones such as IBS, ideally alongside advice from your GP. If you want the same marker for similar outlay, Bluecrest Wellness' Inflammatory Bowel Disease test is priced closely at £85.

How it works

You collect a stool sample at home and post it to the lab; there is no blood-based alternative for this test. A Selph doctor reviews your calprotectin level and provides a written report with an explanation, typically within 1 to 2 days.

Pros & cons

Pros

  • Faster turnaround (1 to 2 days) than most of Selph's other stool-based tests.
  • Considerably cheaper than Blue Horizon Medicals' equivalent test (£146.25).
  • Comes with a written doctor's report explaining what the result means.

Cons

  • A single-marker test, so it cannot identify what is causing any inflammation it detects.
  • No blood-based or clinic collection option, only an at-home stool kit.

Our editorial score

Compare Health Test Score One of Selph's fastest stool test turnarounds
Editorial confidence: 10.0/10

Score breakdown

  • Clarity and documentation 9.0/10

    The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 7.5/10

    A single-marker test measuring exactly what it sets out to; depth is not the point of this comparison group.

  • Collection convenience 8.0/10

    Can be done at home; results within 2 days.

  • Results and follow-up 8.5/10

    Results are reviewed by a doctor.

  • Trust signals 10.0/10

    Trustpilot 4.9 from 71,592 reviews; accredited lab (UKAS ISO 15189 partner labs (Inuvi, TDL)); CQC registered; doctor review as standard.

  • Value for money 6.7/10

    £83.00 against a comparison-group median of £85.00 (-2%).

Compare with similar tests

This test belongs to our Calprotectin test comparison group. See how it stacks up against equivalent tests from other providers.

View all →