Patent ID: 7374721

Claim:
A biosensor measuring instrument, comprising: a substrate having a first section and a second section, an operational electrode and a counterpart electrode spaced-apart from each other and formed on the first section, a first resistor connected with the operational electrode in series, and a first terminal and a second terminal formed on the second section; wherein the operational electrode and the counterpart electrode constitute a second resistor R s , and the resistance of the first resistor is equal to or greater than a maximum resistance of the second resistor R s , the operational electrode and the counterpart electrode respectively electrically connected to the first terminal and the second terminal for detecting a response current passing through the operational electrode; and a reaction layer at the first section of the substrate for at least partially covering the operational electrode and the counterpart electrode, wherein the response current is generated in response to a voltage applied to the operational electrode and a specific component of a specimen that reacts with the reaction layer.