SIBO Breath Test

NEW - A "Collect at Home" breath test for Small Intestinal Bacterial Overgrowth.

  • At-home test
  • Doctor reviewed
Sample
Breath
Collection
At-home breath sample by post
Results in
5 days
Biomarkers
20
Doctor reviewed
Yes
Tests for
  • SIBO Breath Test

Test specifications

Sample type
breath
Collection method
at-home breath sample by post
Turnaround time
5 days
Biomarkers tested
20
At-home test
Yes
Doctor reviewed
Yes
Gender focus
Both

What's tested

1 biomarker as listed by Blue Horizon Medicals, of 20 in total.

  • SIBO Breath Test

About this test

Small Intestinal Bacterial Overgrowth (SIBO) is one of the largest contributors to the symptom list of Irritable Bowel Syndrome (IBS), which affects up to 10 million people in the UK. Usually, very few bacteria exist in the small intestine (in contrast to the large bowel where literally trillions of bacteria exist without causing any symptoms in most people). Excessive bacterial overgrowth in the small intestine may lead to significant problems - chronic diarrhoea, flatulence and weight loss for example.

The analysis of hydrogen and methane fermentation products, produced by these upper intestinal bacteria following ingestion of carbohydrates, is a well-proven technique for screening of SIBO (and carbohydrate intolerance), enabling both rapid diagnosis and treatment monitoring. Easy-to-use-home-sampling test kits (which simply capture air breathed out by the individual) enhance the availability of this diagnostic technique.

The test requires 10 breath samples (taken at 20-minute intervals) which allows for a higher degree of reporting accuracy.

What is a SIBO test?

It is a test which measures hydrogen and methane exhaled from the lungs. It will demonstrate whether or not it is likely that the patient is suffering from small intestinal bacterial growth.

Benefits of SIBO testing

This breath test is the most accessible and non-invasive way to test for SIBO. The human gut is the primary interface with the environment and its health is vitally important when considering 'health and wellbeing'.

How it works

You must fast for at least 12 hours before you start collecting your breath samples, this means you should not eat any food and only have water to drink. You should continue this fast during the test period and therefore most people prefer to commence the test early in the morning to limit the length of their fast. Following a lactulose or glucose drink, 10 breath samples are collected at 20-minute intervals over a period of 3 hours.

On the day before the test do not eat high fibre or slowly digesting foods. Foods to avoid include:

Bran, oats, and wheat-based cereals.
Coarse breads (wholegrain, granary and soft grain varieties)
Dairy products (i.e., milk, cheese, ice-cream, yoghurt, and butter)

Please see our test instructions below for SIBO

Positive Outcomes

This test can easily identify abnormalities in the gut function. Accurate diagnosis provides an opportunity to address undiagnosed chronic gut conditions that may have troubled individuals for many years.

Sample Report: Please click here.

Test Instructions: Please click here.

Description provided by Blue Horizon Medicals.

Our editorial score

Compare Health Test Score
Editorial confidence: 10.0/10

Score breakdown

  • Clarity and documentation 8.0/10

    The listing publishes a detailed description, some of the biomarkers by name, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 9.6/10

    20 biomarkers, placing it in the 93rd percentile of gut health tests we track.

  • Collection convenience 7.0/10

    Can be done at home; results within 5 days.

  • Results and follow-up 7.5/10

    Results are reviewed by a doctor.

  • Trust signals 7.5/10

    Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.

  • Value for money 6.0/10

    £180.25; no comparable tests to benchmark against yet.

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