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Hydrogen-Methane Breath Testing

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1300 837 863







An introduction to Stream Diagnostics

Stream Diagnostics is Australia’s leading provider of Hydrogen/Methane breath tests for Fructose, Lactose, Sorbitol, Mannitol and Sucrose malabsorption and Small Intestinal Bacterial Overgrowth (SIBO).  We have been providing breath tests for 15 years to patients Australia-Wide and internationally for those suffering from IBS type symptoms such as bloating, pain, constipation, diarrhoea and flatulence.  Although we will cover the methodology of breath testing in a later blog, essentially, breath tests allow for the diagnosis of various sugar malabsorption and intolerance issues. The tests are performed by the patient consuming a small sugary solution and technician’s consequently monitoring the gases produced in the breath caused by the malabsorption of the sugar in the gut.

Who are Stream Diagnostics?

Our team is comprised of a group of highly trained professionals with years of experience in the area of breath testing, digestive health and the Low FODMAP Diet. Our team consists of a Senior Medical Scientist, Accredited Practising Dietitian’s, Accredited Nutritionists, Registered Nurses and laboratory technicians.

What separates our testing from the rest?

Unlike many other breath testing laboratories we test for hydrogen and methane levels, not just hydrogen. Testing for both gases allows for more accurate and comprehensive results as 1/3 of the population are methanogens (methane producers). In addition to this, our clinics  are NATA accredited meaning that we have to adhere to strict guidelines and protocols put in place by The National Association of Testing Authorities, Australia (NATA). Stream Diagnostics undertake frequent audits and analyses to keep this accreditation and are the only NATA accredited breath testing laboratory in Australia. 


Our clinics

We have two clinics located in Melbourne:

Ringwood which is open Monday to Saturday with appointment times at either 8am, 10am or 12 noon depending on the day

Brighton which is open Monday, Wednesday and Friday with appointment times at 8am and 10 am.

We also offer a home breath test kit option which enables our patients to complete the testing in the comfort of their own home. These home test kits are also offered to patients nationally and internationally.


We hope you enjoyed our first ever blog! Stay tuned for the coming weeks as we go into detail of breath testing and each individual sugar we test for!