A Helicobacter pylori (H. pylori) Antigen Detection test is a non-invasive stool test used to determine if the H. pylori bacteria are currently living in your gastrointestinal tract. Unlike antibody tests (which only show if you’ve ever had the infection), the antigen test confirms an active infection.
H. pylori is a spiral-shaped bacterium that infects the stomach lining and is the primary cause of stomach ulcers and chronic gastritis.
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