Used in biomedical research to detect and quantify Helicobacter pylori antibodies or antigens in human serum or plasma samples. Widely applied in clinical laboratories and research studies to investigate H. pylori infection, a major cause of gastritis, peptic ulcers, and gastric cancer. Enables high-throughput screening and supports epidemiological studies, diagnosis development, and monitoring of immune responses. Suitable for use in enzyme-linked immunosorbent assays (ELISA) to assess IgG, IgA, or IgM antibody levels against H. pylori with high sensitivity and specificity.