The indicators of H. pylori blood test include cytotoxin-associated protein A, vacuole toxin-associated protein, and urease. 1. Cytotoxin-associated protein A: CagA, which affects the expression of cytotoxins and leads to a severe inflammatory response in the host. antibodies to CagA are a highly specific marker of H. pylori infection. 2. Vacuole toxin-associated protein A: VacA can cause cell vacuolization, apoptosis, and cytoskeletal rearrangement, and vacuole toxin-associated protein A is closely related to peptic ulcer. 3. Urease: Ure, divided into urease subunit A and urease subunit B. It is an important triggering factor for gastric mucosal inflammation after infection with H. pylori. It can be used to diagnose the presence of H. pylori infection, as well as the severity of infection and the efficacy of anti-H. pylori therapy. Abnormal laboratory results, it is recommended to go to a regular hospital for treatment.