Patent ID: 7923258
Filing Date: 2011-04-12
Classification: G01N,Y10T

Abstract:
1. A method for electrochemically determining the concentration of glucose in a blood sample, comprising: applying a potential to the blood sample sufficient to generate a time varying current response; measuring the current response of the blood sample at a first time when the current response varies with the concentration of glucose and the presence of or concentration of red blood cells and has the general form: where i is the current response at a given time t after applying the potential, M is the slope of a curve representing the current response, and B is the value of the current response as t becomes very large; measuring an electrochemical response of the blood sample at a second time when the current response varies with the presence or concentration of red blood cells and is substantially insensitive to the concentration of glucose; and determining a concentration of glucose in the blood sample based on the current response measured at the first time and corrected based on the electrochemical response determined at the second time.