Used in immunological research to quantify CD8 molecule levels in biological samples, this ELISA kit enables accurate measurement of CD8+ T cell activity. It is widely applied in studies related to immune response, viral infections such as HIV and hepatitis, cancer immunology, and autoimmune diseases. Researchers use it to monitor T cell activation and depletion in experimental models, evaluate vaccine efficacy, and assess immunotherapy outcomes. The kit supports high-throughput analysis in serum, plasma, and cell culture supernatants, making it valuable in both preclinical and clinical research settings.