Tests for H pylori: MedlinePlus Medical
2021-7-2 · There are several methods to test for H pylori infection. Breath Test (Carbon Isotope-urea Breath Test, or UBT) Up to 2 weeks before the test, you need to stop taking antibiotics, bismuth medicines such as Pepto-Bismol, and proton pump inhibitors (PPIs). During the test, you swallow a special substance that has urea.
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