A high value of H. pylori on the carbon 14 test requires a complete gastroscopy because a positive H. pylori test does not mean a gastroscopy. Carbon 14 test is mainly used to detect whether you are infected with H. pylori, but it does not detect inflammation or lesions in the stomach, so it must be detected by gastroscopy. Gastroscopy is the best inspection method for esophagus, stomach and duodenum. The examiner can observe the mucosa of each part in turn through the camera at the front of the gastroscope, and can clip tissues under the microscope for rapid detection of H. pylori bacteria and pathological examination. If the carbon 14 breath test is positive, it is recommended to complete the gastroscopy, so that the doctor can analyze and treat the symptoms. If you feel unwell in daily life, you should consult a doctor in time to avoid delaying your condition.