H. pylori 18.7 is usually considered positive if it is a Carbon 13 test value, and if it is a Carbon 14 test value, it is a normal range value, and you cannot see whether it is serious by the value. Helicobacter pylori usually have carbon 13 or carbon 14 two detection methods, usually think that if the carbon 13 test, the normal value range of 0 ~ 4dpm, the patient test value of 18.7 is infected with Helicobacter pylori; if it is carbon 14 to detect the normal value range of 0 ~ 100dpm, the patient patient test value of 18.7 is a normal range of values. Gastritis, duodenal ulcer, gastric cancer, etc. are usually caused by H. pylori infection. Patients infected with H. pylori usually show symptoms such as burping, bloating, acid reflux, nausea and belching. H. pylori is mainly transmitted through fecal-oral and oral-oral transmission, and may cause infection if it comes into contact with water or food contaminated with H. pylori in daily life. If there is an abnormal H. pylori test result, it is recommended to consult a doctor in time to clarify the cause of the disease with the help of the doctor and carry out targeted treatment or therapy.