The H. pylori breath test is a more accurate method. 1. H. pylori can produce highly active urease, when the patient takes urea containing carbon 14 or carbon 13 labeled urea, if the patient’s stomach is infected with H. pylori, the urease enzyme in the stomach can decompose the urea into carbon 14 or carbon 13 labeled carbon dioxide and ammonia, and the labeled carbon dioxide can be discharged through the blood circulation through the expiration of breath. 2. Collecting the gas in the breath and analyzing the amount of carbon dioxide labeled with carbon 13 or carbon 14 in the gas can determine whether the patient has H. pylori infection, and the breath test is currently a more accurate way to check for H. pylori. If there is a need for testing, the test should be conducted under the guidance of a doctor, and if you are not feeling well, do not blindly use medication on your own, so as not to cause adverse effects on the body.