SIBO breath test. An overgrowth of bacteria in the small intestine leads to uncomfortable symptoms such as bloating, gas, and diarrhea. To test for SIBO, you first drink a sugary beverage.

Competitive Hydrogen Gas Utilization by Methane- and Hydrogen Sulfide-Producing Microorganisms and Associated Symptoms: Results of a Novel 4-Gas Breath Test Machine. [Abstract]. Gastroenterology.

Breath gas was collected before, at 20 min intervals from 40 to 120 min after, and at 30 min intervals from 120 min to 7 h after ingestion of test substance. Setting ...