ELISA assay kits find extensive use in both research and diagnostics across various fields. In research, they're employed to quantify specific proteins, antibodies, hormones, or other molecules, aiding in studying diseases, drug development, and understanding biological processes. In diagnostics, ELISA kits are crucial for detecting infectious diseases, such as HIV, hepatitis, and COVID-19, as well as autoimmune disorders and cancer biomarkers. They also play a role in food safety by identifying allergens and contaminants. Moreover, ELISA assays are utilized in environmental monitoring, veterinary medicine, and quality control in pharmaceutical and biotechnology industries.