Used in research and diagnostic applications to detect the Omicron variant spike protein. Binds specifically to the receptor-binding domain (RBD) of the SARS-CoV-2 Omicron strain, enabling studies on viral entry, antibody neutralization, and immune response. Employed in assays such as ELISA, Western blot, and immunofluorescence to evaluate vaccine efficacy and therapeutic antibody development. Supports development of detection kits and contributes to understanding of viral mutations affecting immune escape.