When is an H. pylori breath test recommended for Helicobacter pylori infection?

Helicobacter pylori, also called H. pylori, is a stomach bacterium linked with inflammation and peptic ulcers. A person may have indigestion, upper abdominal discomfort, nausea, or no clear symptoms, so symptoms cannot establish infection by themselves. The breath test checks for activity from the bacterium after a test substance is taken. It can be used during an initial assessment or as a check after treatment.

Give the clinician a complete list of antibiotics, acid-reducing medicines, bismuth products, and supplements. These may need to be stopped for a specified period, but only follow an agreed plan. Follow instructions about food and drink before the appointment. If the result is positive, discuss the full treatment course and how to manage missed doses. A follow-up breath test may be scheduled after treatment has finished and enough time has passed for a reliable result.

Get urgent medical help if you vomit blood, pass black stools, develop severe abdominal pain, faint, or cannot keep fluids down. Promptly arrange review for ongoing vomiting, unexplained weight loss, difficulty swallowing, or symptoms that return after treatment.

Ask what the test is investigating, which medicines affect it, and when to take your last dose. Clarify when results arrive, what treatment follows a positive result, and whether a repeat test will be needed.