Biosensor and method

Abstract

A method of compensating for the presence of hematocrit in a blood sample when measuring a blood analyte using a disposable sensor strip. The method includes disposing a blood sample onto a working electrode and a reference electrode of the disposable sensor strip to obtain a concentration of an analyte in the blood sample, measuring a resistance value of the blood sample between the reference electrode and the working electrode, and calculating a corrected concentration of the analyte using the resistance value and a hematocrit equation to correct for the presence of hematocrit in the blood sample.

1 . A method of compensating for the presence of hematocrit in a blood sample when measuring a blood analyte using a disposable sensor strip, the method comprising:
 disposing a blood sample onto a working electrode and a reference electrode of the disposable sensor strip to obtain a concentration of an analyte in the blood sample;   measuring a resistance value of the blood sample between the reference electrode and the working electrode; and   calculating a corrected concentration of the analyte using the resistance value and a hematocrit equation to correct for the presence of hematocrit in the blood sample.   
   
   
       2 . The method of  claim 1  further comprising:
 applying a potential between the reference electrode and the working electrode which contains an enzyme that is a substrate of the blood analyte; and   measuring a current generated between the working electrode and the reference electrode and correlating the current to a concentration of the analyte in said the sample.   
   
   
       3 . The method of  claim 1  further comprising applying the resistance value to a first equation and determining the hematocrit level of the blood sample.