Used in immunological research to quantify rat interleukin-12 (IL-12) levels in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit enables researchers to study the role of IL-12 in immune responses, including T-cell activation, Th1 differentiation, and inflammation. It is commonly applied in studies related to autoimmune diseases, infectious diseases, and cancer immunotherapy to monitor cytokine expression and evaluate treatment effects in rat models. The assay provides high specificity and sensitivity for accurate measurement of IL-12 concentration, supporting reliable data collection in preclinical research.