Patent ID: 7993512

Claim:
An electrochemical test sensor for detecting the concentration of an analyte in a fluid test sample, the electrochemical test sensor comprising: a base that provides a flow path for the fluid test sample having on its surface a counter electrode and a working electrode in electrical communication with a detector of electrical current, the working electrode including a main portion and at least one secondary portion extending therefrom; a reagent layer directly located on the surface of at least a part of the main portion of the working electrode and at least a part of the at least one secondary portion of the working electrode, the reagent layer including an enzyme that reacts with the analyte; and a lid that mates with the base to form a capillary space with an opening for the introduction of fluid test sample thereto, the capillary space being defined only by the base and a three-dimensional portion of the lid such that the fluid test sample contacts the main portion after being introduced to the capillary space.