Components: Rat Leptin Antibody-coated ELISA Plate (Item A); Lyophilized Rat Leptin Protein Standard (Item C); Biotinylated Rat Leptin Detection Antibody (Item F); ELISA 5X Assay/Sample Diluent Buffer B (Item E1); ELISA 5X Assay/Sample Diluent Buffer D (Item K); HRP-Streptavidin (Item G); ELISA Stop Solution (Item I); ELISA Colorimetric TMB Reagent (HRP Substrate, Item H); 20X Wash Buffer (Item B)