Patent ID: 8293096
Filing Date: 2012-10-23
Classification: G01N

Abstract:
1. A method of determining a substantially hematocrit-independent concentration of an analyte in a fluid sample deposited on a test strip having a reference electrode and a working electrode, in which the working electrode is coated with a reagent layer, the method comprising: applying a fluid sample to the test strip for a reaction period; applying a first test voltage to the reference electrode and the working electrode and measuring a first current value therebetween, the first test voltage being an absolute value from about 100 millivolts to about 600 millivolts; applying a first rest voltage between the reference electrode and the working electrode, the first rest voltage is an absolute value from about zero to about 50 millivolts; applying a second test voltage between the reference electrode and the working electrode and measuring a second current value, in which the second test voltage is an absolute value from about 100 millivolts to about 600 millivolts; applying a second rest voltage between the reference electrode and the working electrode, in which the second rest voltage is an absolute value from about zero to about 50 millivolts; applying a third test voltage between the reference electrode and the working electrode and measuring a third current value, in which the third test voltage is an absolute value from about 100 millivolts to about 600 millivolts; and calculating substantially hematocrit-independent concentration of the analyte from the first, second and third current values, in which the calculating comprises calculating the substantially hematocrit-independent concentration of the analyte from the y-intercept of a graph representing log where: I time is the time at which I