The correct name for Helicobacter pylori is Helicobacter pylori, and the examination methods include sampling test, urease test and immunological test. 1. Sampling test: It is the most accurate and reliable test to detect the existence of H. pylori by taking part of gastric mucosa as sample through gastroscope, direct smear, staining, tissue section staining and bacterial culture. 2. Urease test: H. pylori is the only bacterium that can produce a large amount of urease in the human stomach, so the urease test can be used to diagnose H. pylori infection, and in the clinic, carbon 13 or carbon 14 breath test is mostly adopted to carry out the urease test. 3. Immunological testing method: by checking the antibodies of H. pylori in serum or the antigen of H. pylori in feces, the presence of H. pylori infection can be detected. There may be other tests for H. pylori, so visit your physician for more information.