Used in research and diagnostic applications to detect the SARS-CoV-2 spike protein, particularly the S1 subunit, which plays a key role in viral entry into host cells. This antibody is valuable in immunoassays such as ELISA, Western blot, and immunofluorescence to study immune responses and evaluate vaccine efficacy. Due to its Fc tag, it can also be employed in neutralization assays and binding studies to assess potential therapeutic interventions. Widely utilized in developing diagnostic kits for COVID-19 and in monitoring viral antigen presence in biological samples.