The C13 breath test is generally used to diagnose the presence of H. pylori infection, if the test result is positive, consider the presence of H. pylori infection. The test result is positive, and the patient is considered to have H. pylori infection. The C13 breath test is generally used to diagnose the presence of H. pylori infection, and if the test result is positive, H. pylori infection is considered. Commonly used medication is the use of two antibiotics, which can be combined with proton pump inhibitors and need to be taken on a course of treatment.