Breath Testing

Small intestinal bacterial overgrowth (SIBO) breath test

Helping you take control of your gut health

For too long patients have been living with unresolved gut health problems and losing control of their lives. We have a comprehensive range of tests that can give an overview of your gut health and lead to a gut health diagnosis. The clarity that you need at the highest standards.

What’s the test for?

Hydrogen and methane breath testing is a widely accepted means of identifying changes to the gut microbiome and is used to detect abnormal growth of bacteria in the small intestine, or small intestinal bacterial overgrowth (SIBO).

You may be referred for this test if you are experiencing symptoms including diarrhoea, nausea, bloating, gas and abdominal cramps.

About the procedure

A SIBO breath test is simple and non-invasive. You will provide an initial breath sample by blowing into a test tube through a straw, or into a foil bag, which will give us your baseline reading.

Then, you will drink water containing either glucose or lactulose which needs to be consumed over a minute or two.

Breath samples will then be taken every 15 minutes for just over two hours in order to measure hydrogen and methane, post-ingestion.

During the test, you should take note of any symptoms you experience and complete the symptom form, which will then be interpreted alongside the data collected by a clinician.


Want to know more about our tests?

Our team are happy to help with any specific questions about our tests.
Please feel free to get in touch.

  +44 (0) 20 3198 2420