Electrochemical analysis kit, electrochemical analysis system, and electrochemical analysis method

An electrochemical analysis kit, comprising:

• an electrode section,
• an immobilized conjugate, and
• a labeled conjugate, wherein
• the electrode section includes a pair of electrodes,
• the pair of electrodes includes:
• a working electrode, and
• a counter electrode,
• the immobilized conjugate is capable of specifically binding to an analyte, and of being immobilized at a specific site in a state of being bound to the analyte,
• the labeled conjugate is capable of specifically binding to the analyte, and is labeled with a metal particle,
• when the analyte is contained in a sample to be analyzed, the immobilized conjugate and the labeled conjugate bind to the analyte, so that the labeled conjugate be immobilized at the specific site,
• the specific site is a position where the metal particle can be oxidized by control of potential of the working electrode,
• after the oxidation of the metal particle, the metal particle is reduced by control of potential of the working electrode,
• current generated by the reduction can be measured with the pair of electrodes, and
• a conjugate of at least one of the immobilized conjugate or the labeled conjugate is an aptamer.