The Eagle Biosciences Human Interleukin 4 (IL-4) ELISA Assay Kit (enzyme-linked immunoassay kit) is intended for the quantitative determination of rat interleukin 4 (IL-4) concentrations in cell culture supernates, serum, and plasma. The Human Interleukin 4 (IL-4) ELISA Assay Kit is for research use only and not to be used in diagnostic procedures.