Method of measuring blood component, sensor used in the method, and measuring device

Abstract

The present invention provides a method of measuring a component in blood, by which an amount of the component can be corrected accurately by measuring a hematocrit (Hct) value of the blood with high accuracy and high reliability and also provides a sensor used in the method. The method of measuring a component in blood using a biosensor comprising a first electrode system including a first working electrode on which at least an oxidoreductase that acts upon the component and a mediator are provided and a first counter electrode and a second working electrode on which the mediator is not provided. The first working electrode and the first counter electrode are used for obtaining the amount of the component and the second working electrode and the first working electrode are used for obtaining the amount of the blood cells.

1 - 43 . (canceled) 
     
     
         44 . A biosensor comprising:
 a body having a channel extending linearly in an I shape for drawing a blood;   a first electrode exposed to the channel; and   a second electrode exposed to the channel,   the first and second electrodes being made from at least one of gold, palladium, and platinum,   a mediator and an oxidoreductase being provided on the first electrode and provided so as to extend across the width of the channel, a substrate for the oxidoreductase being a blood component, and   the mediator not being provided on the second electrode.   
     
     
         45 . The biosensor according to  claim 44 , wherein the oxidoreductase is glucose dehydrogenase. 
     
     
         46 . The biosensor according to  claim 44 , wherein a length of the channel is 1 to 5 mm and a width of the channel is 0.2 to 3 mm.