The carbon 13 test costs about$100. The carbon 13 test is mainly a test to check for H. pylori in the stomach and is somewhat radioactive, so it is generally relatively contraindicated for women or children during pregnancy preparation or who are already pregnant. Carbon 13 is mainly done by taking a capsule orally on an empty stomach and then waiting for about 15 minutes to blow the card and test the amount of carbon 13 on the card to check the active level of H. pylori in the stomach through the machine. Generally if the DPM is less than 200, most of the cases can be considered to continue clinical observation and no special treatment is needed. If it is above 700, accompanied by abdominal pain or perfected gastroscopy with erosion or ulcer, anti-H. pylori medication is needed, clinically based on the results of the carbon 13 test, symptomatic treatment with gastric triplex and gastric quadruplex medication is given.