Electrochemical impedance immunosensor has been demonstrated to be an effective method for probing the targets of antigens /antibodies in the samples by monitoring the interfacial properties of the modified electrode. Electrochemical impedance immunosensing technique, which incorporates high sensitivity of impedancic response and high specificity of antibody-antigen immunoreaction, is sensitive to signal of electronic transfer impendace of the biomolacular on the electrode interface. It presents some...