GLUT1 Blocking Peptide (#BLP-GT021) is the original antigen used for immunization during Anti-GLUT1 Antibody (#AGT-021) generation. The blocking peptide binds and ‘blocks’ Anti-GLUT1 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.