Used in research and diagnostic applications targeting SARS-CoV-2, this antibody binds to the spike protein's S1 subunit, enabling detection and quantification of the virus in immunoassays. It serves as a reference tool for evaluating neutralizing antibody responses and supports the development of therapeutic antibodies and vaccines. Commonly applied in ELISA, lateral flow assays, and immunofluorescence, it helps characterize spike protein interactions and assess antigen stability. Its high specificity makes it valuable for quality control in diagnostic kit manufacturing and virology studies.