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H. pylori Testing

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Also known as: H pylori; H-pylori; H. pylori antibody test; H. pylori stool antigen test; H. pylori breath test; Urea breath test; CLO test; Rapid urease test (RUT) for H. pylori
Formal name: Helicobacter pylori
Related tests: Gastrin

At a Glance

Why Get Tested?

To diagnose an infection with Helicobacter pylori, bacteria that can cause peptic ulcers

When to Get Tested?

When you have symptoms of an ulcer, such as gastrointestinal pain that comes and goes, unexplained weight loss, nausea and/or vomiting

Sample Required?

A stool sample, a breath sample, or a tissue biopsy of the stomach lining

Test Preparation Needed?

You may need to avoid certain medications; follow any instructions you are given.