​​What is Hydrogen/Methane breath Test?

The hydrogen/methane breath test is a test that uses the measurement of hydrogen in the breath to diagnose several conditions that cause gastrointestinal symptoms.

Large amounts of hydrogen may be produced where there is a problem with the digestion or absorption of food in the small intestine that allows more unabsorbed food to reach the colon or when the colon bacteria move back into the small intestine. 

Some of the hydrogen produced by the bacteria, whether in the small intestine or the colon, is absorbed into the blood flowing through the wall of the small intestine and colon. The hydrogen-containing blood travels to the lungs where the hydrogen is released and exhaled in the breath where it can be measured.

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