The Hydrogen Breath Test is a medical procedure used to diagnose conditions like lactose intolerance and small intestinal bacterial overgrowth (SIBO). During the test, a patient drinks a sugar solution, and then breath samples are taken at regular intervals to measure the amount of hydrogen in the breath. Elevated hydrogen levels indicate that the sugar is not being properly absorbed in the intestines. This test is non-invasive and typically takes about two to three hours to complete. Patients are usually advised to avoid certain foods and medications before the test to ensure accurate results. The Hydrogen Breath Test helps healthcare providers determine the best treatment options for digestive issues.