Small intestinal bacterial overgrowth: A disorder where an excessive amount of bacteria is found in the small intestine, often leading to loose stools, weight loss, malabsorption and other issues.
Smokers are advised never to smoke for 1-2 hours ahead of testing. All breath tests depend on the recovery and quantification of an exhaled gas produced by the bacterial metabolism of the ingested substrate. The development of inexpensive, commercially available gas chromatographs to measure exhaled hydrogen and/or methane has led to the widespread use of…