Used in immunological research to detect and quantify human immunoglobulins in biological samples. Enables accurate measurement of antibody levels in serum, plasma, or cell culture supernatants. Commonly applied in studies of immune response, vaccine development, autoimmune diseases, and infectious disease diagnostics. Provides high specificity and sensitivity due to optimized binding protein interactions. Suitable for monitoring IgG, IgA, and IgM in clinical and research settings. Facilitates high-throughput analysis in laboratories focused on humoral immunity.