The Science Behind Calprotectin & FIT: What Do Stool Markers Reveal About Your Health?

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What Are Stool Biomarkers and Why Should You Care?

Gut health has become a hot topic across the UK. But what do scientific markers like calprotectin and "FIT" actually tell us? Let’s break it down:

Calprotectin: The Inflammation Clue

Calprotectin is a protein found in white blood cells. When your gut is inflamed – as in conditions like Crohn’s disease, ulcerative colitis, or even after infection – calprotectin leaks into your stool. High levels can signal that you need further specialist assessment.

What about IBS?

IBS (irritable bowel syndrome) doesn’t usually raise calprotectin. That’s why this marker helps GPs sort IBS from inflammatory conditions.

FIT: Checking for Hidden Blood

Faecal immunochemical testing (FIT) detects undiagnosed blood in the stool – often invisible to the naked eye. This can help spot early signs of bowel cancer or other causes of gastrointestinal bleeding.

"Stool testing with calprotectin and FIT can spot gut problems early, giving you and your doctor peace of mind or a clear next step."

Home Testing: Science Meets Convenience

What Happens After Testing?

If your biomarkers are raised, we’ll guide you to appropriate care – whether that’s repeat tests, referral, or lifestyle changes. If results are normal, that often provides reassurance you can act safely to relieve minor symptoms with diet or simple treatments.

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Frequently asked questions

Will my GP or the NHS see my results if I order privately?

No, the Mayfield home stool test is private and discreet. Your test is entirely confidential. Results are shared only with you, and (if you wish) a Mayfield GP for further guidance. The NHS does routine stool testing, but our private option is fast and convenient.

How quickly will I receive results from the Mayfield home kit?

Most within the UK receive results in around 5 working days after the laboratory receives your sample. We'll provide a straightforward report and optional follow-up consultation.

Is collecting the sample at home safe and hygienic?

Yes, the sample is collected in a sealed, sterilised container using easy-to-follow instructions. It’s safe, straightforward, and takes just a few minutes at home.

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