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Hydrogen-Methane Breath Testing

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1300 837 863

About Stream Diagnostics

Stream Diagnostics is Australia’s leading provider of Hydrogen/Methane breath tests for Fructose, Lactose, Sorbitol, Mannitol and Sucrose malabsorption, and Small Intestine Bacterial Overgrowth (SIBO).


Malabsorption of these sugars is a key trigger of the Irritable Bowel Syndrome (IBS)-type symptoms. Stream Diagnostics specialises in providing these breath tests such as lactose intolerance test at home, and has done so for the past several years.


Stream Diagnostics has been directly involved for over 10 years in the research and development of these tests, following the development of the Low FODMAP diet. During this time, Stream has worked with Monash University Department of Medicine at Box Hill Hospital in Melbourne, Australia to assist in various research projects in this field.


Our team is comprised of Medical Research Scientists who are specialists in IBS and IBS-type symptoms, along with a Project Manager and other staff of whom have been closely involved with the development of these tests and the Low FODMAP Diet over the past several years. We have the greatest experience in providing these tests, and in the team of experts working with us to provide the highest quality testing and reporting available.

Stream Diagnostics provides all tests according to research-based protocols, using the hydrogen/methane simultaneous breath sampling for each and every test performed. This is the highest level of analysis available for dietary sugar malabsorption testing.


We require patients to follow the latest Low FODMAP Diet in preparation for each test, as this is crucial to the success of any tests for dietary sugar malabsorption. This preparation, along with the test protocols themselves, ensure that the highest standard is maintained.


Should you have any questions about our services, the protocols we use or the reporting provided, please contact us.


Stream Diagnostics is Accredited for compliance with NPAAC Standards and ISO 15189.