{"id":"h-pylori-stool-antigen","name":"H. pylori Stool Antigen","shortName":"H. pylori stool antigen","aliases":["H. pylori Antigen, Stool","Helicobacter pylori Stool Antigen","H. pylori Ag, Stool","HpSA","H. pylori Stool Ag","Helicobacter pylori Antigen, Fecal","H. pylori Stool Ag, EIA","H pylori Stool Antigen","H. pylori Stool Antigen, EIA"],"abbreviations":["HpSA"],"loinc":[{"code":"17780-8","primary":true},{"code":"31843-6","primary":false},{"code":"80373-4","primary":false}],"specimen":"stool","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A stool test that looks for H. pylori proteins and shows an active infection. Recent antibiotics, acid reducers or bismuth can hide a true infection.","url":"https://bloodtesttracker.com/markers/h-pylori-stool-antigen","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}