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, and has done so for the past several years.