Patent ID: 7125481
Filing Date: 2006-10-24
Classification: C12Q,G01N

Abstract:
1. An electrochemical test sensor adapted to assist in determining the concentration of an analyte in a fluid test sample, the sensor comprising: a base that assists in forming an opening for introducing the fluid test sample; a working electrode being coupled to the base; a counter electrode being coupled to the base, the counter electrode and the working electrode being adapted to be in electrical communication with a detector of electrical current; and a sub-element being coupled to the base, a major portion of the counter electrode being located downstream relative to the opening and at least a portion of the working electrode, the sub-element being located upstream relative to the working electrode such that when electrical communication occurs between only the sub-element and the working electrode there is insufficient flow of electrical current through the detector to determine the concentration of the analyte in the fluid test sample.