Used in immunology research to quantify rabbit interleukin-4 (IL-4) levels in biological samples such as serum, plasma, or cell culture supernatants. This kit enables researchers to study the role of IL-4 in immune responses, particularly in Th2-mediated inflammation, allergic reactions, and anti-parasitic immunity in rabbit models. It is commonly applied in studies involving asthma, dermatitis, vaccine development, and autoimmune diseases where IL-4 signaling is a key factor. The assay provides high specificity and sensitivity for detecting low concentrations of IL-4, supporting accurate data collection in preclinical research.