Kv12.3/KCNH4 Blocking Peptide (#BLP-PC116) is the original antigen used for immunization during Anti-KV12.3 (KCNH4) Antibody (#APC-116) generation. The blocking peptide binds and ‘blocks’ Anti-Kv12.3/KCNH4 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.