In 2020, due to the state of alarm caused by the COVID-19 pandemic, the detection of Helicobacter pylori infection by breath test was considerably reduced for reasons of biosafety against the coronavirus. For this reason, the prescription of the stool antigen test has increased, both for the initial detection of Helicobacter pylori infection and for monitoring after eradication treatment. The tool considered Gold Standard for the detection of Helicobacter pylori both at the beginning and after eradication treatment is the breath test. This is based on the detection of the bacterium through...