Both C13 and C14 are breath test detection systems, a sensitive test used to detect H. pylori infection, and there is not much difference in essence. The main difference is that C14 is somewhat radioactive, while C13 is a modified version of C14 that is not radioactive and therefore more suitable for children, pregnant women or elderly patients. In addition, there are some differences in the way they are examined: 1, C-13 breath test detection system: the patient needs to fast for a few hours before the examination, followed by a capsule taken orally with warm boiled water intact, and after sitting still for about 15 minutes, the sample is retained by blowing through a special breath card, and the breath card is placed in a special detector to detect whether the patient is suffering from H. pylori infection in a sensitive, accurate and comprehensive manner. 2, C-14 breath test detection system: patients also need to be tested on an empty stomach, before the test need to take oral C14 urea capsules, after sitting still for about 25 minutes, like a collection bottle or carbon dioxide absorbers exhale, exhale a few minutes later, the test paper becomes golden yellow, and then the instrument can be handed over to the doctor for testing. Both C13 and C14 are non-invasive testing methods, the advantages of which are less damage to the patient’s body, easy to operate, faster detection time, and can accurately check whether the patient is infected with H. pylori, which is conducive to the timely treatment of the disease.