There are two main methods of blowing to detect H. pylori: the C13 breath test and the C14 breath test. There are C13 and C14 breath test experiments for H. pylori detection by blowing. the C13 and C14 breath tests operate in a similar way, and there is little difference in terms of accuracy, specificity and sensitivity. If you suspect that you have H. pylori infection, you can choose to perform the C13 or C14 breath test, which is easy to use and has better detection accuracy. It is recommended to choose the appropriate test method under the guidance of your doctor, and if the test is abnormal, you need to consult a doctor in time for treatment.