The normal range of 13C breath test is 0-4, which can be used to determine specifically whether the body is diseased based on the test results. If the test value is below 4, it proves that there is no H. pylori infection in the body, which is negative and within the normal range. However, recent use of proton pump inhibitors and antibiotics can result in false negatives. If the test value is above 4, it proves the presence of H. pylori infection in the body, which is positive. H. pylori infection is not to be ignored and can lead to various diseases in the body, including peptic ulcer, gastric cancer, chronic gastritis, and lymphoma of the stomach. According to the test range will be able to clarify whether the body appears disease, according to the test results for specific treatment, H. pylori infection to do eradication treatment, otherwise the consequences are very serious. In daily life, eat less food containing starch, no smoking, no alcohol, pay attention to rest, regular diet, can take amoxicillin capsules, rabeprazole for treatment, breathing normal value of 4 or less is no problem.