Le khithi isetyenziselwa ukufumanisa i-in vitro qualitative ye-helicobacter pylori nucleic acid kwi-gastric mucosal biopsy tissue iisampulu okanye iisampulu zamathe zezigulane ekurhaneleka ukuba zosulelwe yi-helicobacter pylori, kwaye ibonelela ngeendlela ezincedisayo zokuxilongwa kwezigulane ezine-helicobacter pylori isifo.