A positive 14-carbon breath test155 is more serious. 14-carbon breath test is performed by swallowing a urea pill containing 14-carbon marker. If H. pylori infection is present in the stomach, H. pylori can secrete urease, which causes urea to break down, and the value of H. pylori is finally determined by measuring the exhaled carbon dioxide containing the marker 14 carbon. 14-carbon breath test positive155 means that H. pylori is positive. Helicobacter pylori positive. Moreover, if no intervention is made, it can lead to damage of the gastric mucosa and the formation of erosive gastritis and peptic ulcer, which can cause serious complications such as gastric distension, stomach pain, and blood in the stool. Therefore, once a positive 14 breath test is detected and the value reaches 100 or more, standard anti-H. pylori treatment should be administered.