Q I was told to get a hydrogen breath test for SIBO diagnosis. Is this test accurate?
A The hydrogen/methane breath test is the most widely used non-invasive method for SIBO diagnosis. It has possibilities of false positives and false negatives, so comprehensive judgment together with clinical symptoms is important.
Detailed Answer
After drinking lactulose or glucose, hydrogen and methane concentrations in exhaled breath are measured at intervals over time. This uses the principle that when small intestinal bacteria ferment carbohydrates, gas is released through the blood to the lungs. Stopping certain foods and antibiotics for a set period before the test increases accuracy.
Korean Medicine Clinic Perspective
Even if the test result is negative, if symptoms are clear, treatment may be started with a clinical SIBO judgment. In Korean medicine practice, the treatment direction is determined based on actual digestive function and symptom patterns rather than test results.
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