GLUT4 Blocking Peptide (#BLP-GT024) is the original antigen used for immunization during Anti-GLUT4 Antibody (#AGT-024) generation. The blocking peptide binds and ‘blocks’ Anti-GLUT4 primary antibody, this makes it a good negative reagent control to help confirm antibody specificity in western blot and immunohistochemistry applications. This control is also often called a pre-adsorption control.