What does an H. pylori breath test treat?

The test looks for evidence that H. pylori is present in the stomach. A positive result may help explain irritation of the stomach lining, called gastritis, or an ulcer in the stomach or upper intestine. The test itself is diagnostic: it does not kill bacteria, repair an ulcer, or settle pain immediately.

If infection is confirmed, treatment commonly combines antibiotic treatment with a medicine that reduces stomach acid. The exact medicines depend on your history, allergies, previous antibiotic exposure, and local clinical practice. A negative result may mean H. pylori is not detected, although medicines taken before testing can affect interpretation.

Follow the preparation instructions carefully, including any advice about medicines, food, and drink before the appointment. If the result is positive, take the prescribed course exactly as directed and do not share leftover antibiotics. Tell the clinician if you develop troublesome side effects or cannot keep the medicines down.

Some people need a later check to confirm that the infection has cleared. Ask when that check is appropriate and which medicines must be paused beforehand. Seek advice before stopping a prescribed course, because incomplete treatment can make future management more difficult.

Arrange medical review for ongoing upper-abdominal pain, repeated vomiting, unexplained weight loss, difficulty swallowing, or symptoms that persist after treatment. Seek urgent care for vomiting blood, black tarry stools, fainting, severe worsening abdominal pain, or weakness with signs of bleeding.

Ask whether the test is appropriate for your symptoms, how to prepare around your current medicines, and what a positive or negative result means for you. You can also ask which treatment is planned, what side effects need prompt advice, and whether a follow-up test will be needed.