What is this test?
This test measures Helicobacter pylori antigen in stool as evidence relevant to possible current infection. Because the catalogue labels it quantitative, the laboratory should state the units and reporting method.
Why might it be ordered?
- For persistent upper gastrointestinal symptoms when H. pylori is a possible cause.
- To check eradication after treatment, but only at the appropriate time advised by a clinician or laboratory.
- As a non-invasive direct test when stool antigen testing has been selected.
What sample is needed?
Collect stool in a clean container. Follow instructions for amount and delivery, and do not mix it with urine, toilet water, or cleaning products.
How should you prepare?
Antibiotics, bismuth-containing medicines, and proton-pump inhibitors can affect the result. Do not stop them on your own; report everything taken and obtain exact timing advice.
How should you understand the result?
The report should give a numerical value or index under the assay-specific ranges. Ask how the value is classified and compared; it does not measure symptom severity by itself.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.