Patent ID: 8852423

Claim:
An electrochemical test strip, comprising: a substrate, comprising a test end; an electrode structure, formed on the substrate, comprising: a first electrode; a second electrode, comprising a first end, a second end, an extension portion, and a bent portion, wherein the extension portion is connected between the first end and the bent portion, the bent portion is connected to the second end, and the extension portion and the first electrode define a space therebetween for receiving the bent portion; and an insulative layer, covering at least a part of the electrode structure and forming an opening corresponding to the test end, wherein a sample is injected through the opening into the electrochemical test strip and sequentially contacts the first electrode and the second electrode; wherein a testing voltage is applied between the first electrode and the second electrode for electrochemical measurement of the sample; wherein the bent portion comprises a first section, a second section and a connecting section, wherein the first section is connected between the extension portion and the connecting section, the second section is connected between the second end and the connecting section, and the first section, the second section, and the connecting section form a U-shaped structure; wherein the bent portion further comprises a protruding section, and the protruding section is connected to the second section and extended toward the test end.