Additional Specimen Instructions

This is a qualitative test for the presence of Helicobacter pylori (H. pylori) antigen in human stool.

Antimicrobials, proton pump inhibitors and bismuth preparations are known to suppress H. pylori, and ingestion of these prior to H. pylori testing may cause false-negative results. If a patient has ingested these compounds within two weeks a false-negative result may occur. In such cases, the test should be repeated on a new specimen obtained two weeks after discontinuing treatment. A positive result for a patient ingesting these compounds within two weeks prior to testing should be considered accurate.