Carbon 13 breath test test, the cost is about 100 yuan, carbon 13 test, carbon 14 breath test, the mechanism of action is similar. It is mainly to swallow a capsule containing radioactive elements, wait for about 15 minutes to blow the card, and pass the exhaled marker containing carbon 13 through the instrument to monitor the amount of radioactive elements on the card, thus indirectly reflecting the active level of H. pylori in the stomach. This tends to be higher or lower and does not reflect the amount of H. pylori, but only the degree of H. pylori drug activity. If the amount of H. pylori is high, but not significantly active, and the test results are relatively low or will be negative, the patient may consider continuing observation. For DPM titers greater than 1000, anti-H. pylori medication is required.