METHOD OF REDUCING THE EFFECT OF DIRECT AND MEDIATED INTERFERENCE CURRENT IN AN ELECTROCHEMICAL TEST STRIP

摘要

The present invention is directed to a method of reducing interference in an electrochemical sensor (800) wherein the method includes the step of measuring a first current at a first working electrode (808), the first working electrode (808) being covered by an active reagent layer (820), the step of measuring a second current at a second working electrode (806), the second working electrode (806) being covered by an inactive reagent layer (818) and the step of calculating a corrected current value representative of a glucose concentration using a ratio of an active area of the first working electrode (808) to an inactive area of the second working electrode (806). The present invention is further directed to a method of reducing interferences in an electrochemical sensor (1000) wherein the method includes the step of measuring a first current at a first working electrode (100), the first working electrode (100) being covered by an active reagent layer (820), the step of measuring a second current at a second working electrode (102), wherein the active reagent layer (820) is disposed on an active region (102a) of the second working electrode (102) and an inactive region (102i) of the second working electrode (102) is covered by an inactive reagent layer (818) and the step of calculating a corrected current value representative of a glucose concentration using a ratio of an active region on the first and second working electrodes and an inactive region on the second working electrode. ® KIPO & WIPO 2007