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Measures hydrogen in breath to detect carbohydrate malabsorption and small intestinal bacterial overgrowth causing bloating.
The hydrogen breath test measures hydrogen (and sometimes methane) gas in your breath. These gases are made when gut bacteria ferment unabsorbed carbohydrates. Measuring them helps find problems with digesting sugars and with bacterial overgrowth in the small intestine. It is important because malabsorption and bacterial overgrowth can cause bloating, gas, pain and diarrhea. Doctors use the test to diagnose lactose or fructose intolerance and small intestinal bacterial overgrowth (SIBO). Results guide treatment such as dietary changes, enzyme supplements, or antibiotics. The test is noninvasive and can reduce the need for more invasive procedures when results are clear.
Do not eat or drink anything except water for 8-12 hours before the test
The Hydrogen breath test test evaluates various parameters related to the different components. Here are the main parameters that are checked in the test:
Hydrogen breath test is commonly ordered as a standalone test or as part of investigations for malabsorption and SIBO. It is used when patients report bloating, excess gas, abdominal pain or unexplained diarrhea. The test helps diagnose lactose or fructose intolerance and small intestinal bacterial overgrowth. Abnormal results may follow recent antibiotics, probiotics, rapid gut transit, inflammatory bowel disease, or dietary factors. A family history of lactose intolerance can make this test especially relevant.
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Vijay Bisht was friendly, helpful, and made our home test process seamless. Grateful for his timely support and follow-up.
A big thank you to Shikhar from the Visit app for going above and beyond to arrange a last-minute appointment during an urgent situation. His seamless coordination truly made a difference.
Shikhar Singh's prompt and proactive support—despite ongoing delivery issues—completely changed my view of Visit's service. Truly commendable!
I connected with the concierge team today and spoke with Vijay—he was helpful and made a real effort to address my concerns.
Vijay Bisht was friendly, helpful, and made our home test process seamless. Grateful for his timely support and follow-up.
A big thank you to Shikhar from the Visit app for going above and beyond to arrange a last-minute appointment during an urgent situation. His seamless coordination truly made a difference.
Shikhar Singh's prompt and proactive support—despite ongoing delivery issues—completely changed my view of Visit's service. Truly commendable!
I connected with the concierge team today and spoke with Vijay—he was helpful and made a real effort to address my concerns.
Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!
Huge thanks to Shikhar who handled our emergency situation with such care. He was always responsive, professional, and his dedication made a real difference.
The service was excellent—she was helpful, patient, and made my recovery smooth and stress-free. Her support made a real difference.

Great experience at a company that truly cares about its customers. The team went above and beyond to ensure everything was perfect.
Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!
Huge thanks to Shikhar who handled our emergency situation with such care. He was always responsive, professional, and his dedication made a real difference.
The service was excellent—she was helpful, patient, and made my recovery smooth and stress-free. Her support made a real difference.

Great experience at a company that truly cares about its customers. The team went above and beyond to ensure everything was perfect.