Analyte measurement method and system
First Claim
1. A method for determining a glucose concentration measurable with a system having a test strip and a meter, the method comprising:
- applying a first test voltage between a reference electrode and a second working electrode coated with a reagent layer and applying a second test voltage between a reference electrode and a first working electrode coated with a reagent layer;
measuring a first test current, a second test current, a third test current and a fourth test current at the second working electrode after a blood sample containing glucose is applied to the test strip;
measuring a fifth test current at the first working electrode;
determining the glucose concentration from the first, second, third, fourth and fifth test currents with an equation of the form;
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Abstract
Described and illustrated herein are systems and exemplary methods of operating an analyte measurement system having a meter and a test strip. In one embodiment, the method may be achieved by applying a first test voltage between a reference electrode and a second working electrode and applying a second test voltage between the reference electrode and a first working electrode; measuring a first test current, a second test current, a third test current and a fourth test current at the second working electrode after a blood sample containing an analyte is applied to the test strip; measuring a fifth test current at the first working electrode; estimating a hematocrit-corrected analyte concentration from the first, second, third, fourth and fifth test currents; and annunciating the hematocrit-corrected analyte concentration.
14 Citations
7 Claims
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1. A method for determining a glucose concentration measurable with a system having a test strip and a meter, the method comprising:
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applying a first test voltage between a reference electrode and a second working electrode coated with a reagent layer and applying a second test voltage between a reference electrode and a first working electrode coated with a reagent layer; measuring a first test current, a second test current, a third test current and a fourth test current at the second working electrode after a blood sample containing glucose is applied to the test strip; measuring a fifth test current at the first working electrode; determining the glucose concentration from the first, second, third, fourth and fifth test currents with an equation of the form; - View Dependent Claims (2)
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3. A method for determining a hematocrit-corrected test current measurable with a system having a test strip and a meter, the method comprising:
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applying a first test voltage between a reference electrode and a second working electrode coated with a reagent layer and applying a second test voltage between a reference electrode and a first working electrode coated with a reagent layer; measuring a first test current, a second test current, a third test current and a fourth test current at the second working electrode after a blood sample containing glucose is applied to the test strip; measuring a fifth test current at the first working electrode; and determining the hematocrit-corrected test current by determining a ratio of the first test current to the second test current raised to a power term and multiplying the ratio by the fifth test current, where the power term is a function of a first tuning parameter and a second tuning parameter. - View Dependent Claims (4, 5, 6, 7)
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Specification