If your doctor suspects H. pylori, they’ll usually order a standard stool antigen or breath test. They’re fine starting points, but they miss real infections more often than anyone admits. In one 2025 study, standard stool antigen testing caught only about 28% of infected patients while PCR stool testing caught 51% (doi.org/10.3390/microorganisms13071498). That’s nearly half potentially told they’re “negative.” This matters long term. Left untreated, H. pylori can drive chronic inflammation, ulc
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If your doctor suspects H. pylori, they’ll usually order a standard stool antigen or breath test. They’re fine starting points, but they miss real infections more often than anyone admits. In one 2025 study, standard stool antigen testing caught only about 28% of infected patients while PCR stool testing caught 51% (doi.org/10.3390/microorganisms13071498). That’s nearly half potentially told they’re “negative.” This matters long term. Left untreated, H. pylori can drive chronic inflammation, ulc
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