Normally, bacteria are found in the trillions in the large intestine, where they perform various symbiotic functions for the human body, but the small intestine is relatively sterile.

SIBO is a condition where bacterial overgrowth occurs in the absorptive area of the body the small intestine.

For a quiz, to see if you may have SIBO, click here

Symptoms include:

  • Abdominal cramping
  • Gas & Bloating
  • Diarrhea
  • Constipation
  • Burping and Acid Reflux/GERD
  • Food sensitivities
  • Iron and B12 deficiency
  • Joint pain, skin rashes, and respiratory symptoms such as asthma
  • Worsening Crohn’s disease, coeliac disease, or scleroderma despite adequate treatment.
Bacteria count through the intestine
SIBO Test Logo
  • The breath test is a simple, non-invasive test. After a 24 hours preparatory diet, the lactulose (or glucose or fructose) test substrate is swallowed.
  • Lactulose is not absorbed and therefore may act as a food source for bacteria, if present, in the small intestine.
  • The bacteria may ferment the lingering substances and produce hydrogen and/or methane. These gasses may then be diffused into the bloodstream and exhaled via the breath.
  • Breath samples are collected every 20 minutes for 3 hours.

Stephen Ward Headshot ImageHi, I’m Stephen Ward (MSc) from Fairfield Nutrition.

The SIBO test is a simple breath test you can do at home. We post the test kits to your address; The kit includes a reply paid envelope for you to return the completed sample. It’s a simple process..

SIBO is surprisingly common, particularly among people who have digestive discomfort or IBS. Once identified, it can be treated with antibiotics through your  GP or using an approach that is less damaging to our gut bacteria using diet, lifestyle, probiotics, and possibly herbal anti-microbials.

We offer the test along with a 1 hour consult to discuss your results, what they mean, and a plan to improve your gut health.

Prices include a 1 hour consultation with myself to go over your results and offer nutrition and lifestyle advice

Once paid, the test kit will be sent through the post to your address. The breath test can be completed at home and returned in the postage paid envelope.


Fructose (for Fructose Malabsorption) and Glucose breath testing is also available. Please contact us for pricing

Functional Medicine can improve healthFREE First Consultation

Free 20 minute consults (online or phone).

Find out how nutrition can help you …