MSRA-0766

A 35-year-old woman with indigestion has been taking her friend’s omeprazole for the past week, which has improved her symptoms. You want to check for the presence of Helicobacter pylori by using a stool antigen test (SAT) or a carbon-13-labelled urea breath test (UBT). What is the recommended waiting period after stopping a proton pump inhibitor (PPI) before conducting these tests?