Used in research and diagnostic applications to detect the spike protein of Omicron BA.2 and BA.2.75 variants of SARS-CoV-2. Enables specific binding to the receptor-binding domain (RBD), supporting studies on viral neutralization, antibody efficacy, and immune response evaluation. Suitable for use in immunoassays, such as ELISA and lateral flow, due to its high specificity and stability. Also explored in therapeutic development for targeted delivery and passive immunity strategies.