Abstract: A calibration method, including steps of: providing a test meter having a socket provided with a set of conductive pins; providing a biosensor test strip having a set of strip electrodes corresponding to the set of conductive pins, wherein the combination of lengths of the strip electrodes corresponds to a parameter code; inserting the biosensor test strip into the socket of the test meter so that each of the conductive pins and each of the corresponding strip electrode have a relative motion; reading out the parameter code by using a set of pulse widths detected by each of the conductive pins in the insertion period; and calibrating the test meter by using the parameter code to match a calibration parameter installed in the test meter.

Abstract: An electrochemical test strip is provided, including a substrate, an electrode structure and an insulative film. The electrode structure is formed on the substrate, including a first electrode and a second electrode. The second electrode includes a first end, a second end, an extension portion, and a bent portion. The extension portion connects the first end with the bent portion, and the bent portion is connected to the second end. The extension portion and the first electrode define a space therebetween for receiving the bent portion. The insulative film covers at least a part of the electrode structure and forms an opening. A sample fluid enters the electrochemical test strip through the opening, and the sample fluid sequentially contacts the first electrode and the second electrode.

Abstract: A biosensor is provided. The biosensor is used to sense a biological sample and has a code representing features of the biosensor. The biosensor includes a substrate and a conductive layer. The conductive layer is disposed on a first side of the substrate and includes a first conductive loop and a second conductive loop. The first conductive loop is formed between a first node and a second node and has a first impedance. The second conductive loop is formed between the second node and a third node and has a second impedance. The code is determined according to a comparison result between the second impedance and the first impedance.