ANALYTE MEASURMENT 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 test voltage between a reference electrode and a working electrode coated with a reagent layer disposed on a matrix layer having a mediator;
measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip to physically transform the analyte into an enzymatic by-product;
determining a glucose concentration from the first, second and third test currents; and
displaying the glucose concentration.
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Accused Products
Abstract
Described and illustrated herein are systems and exemplary methods of operating a multianalyte measurement system having a meter and a test strip. In one embodiment, the method may be achieved by applying a test voltage between a reference electrode and a first working electrode; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip; estimating a hematocrit-corrected analyte concentration from the first, second and third test currents; and displaying the hematocrit-corrected analyte concentration.
31 Citations
33 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 test voltage between a reference electrode and a working electrode coated with a reagent layer disposed on a matrix layer having a mediator; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip to physically transform the analyte into an enzymatic by-product; determining a glucose concentration from the first, second and third test currents; and displaying the glucose concentration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining at least a glucose concentration measurable with a system having a test strip and a meter, the method comprising:
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applying a test voltage between a reference electrode and a working electrode coated with a reagent layer disposed on a matrix layer having a mediator; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip; determining the glucose concentration from the first, second and third test currents with the following; - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. 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 test voltage between a reference electrode and a working electrode coated with a reagent layer disposed on a matrix layer having a mediator; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip; and ascertaining a hematocrit-corrected test current via a ratio of the first test current to the second test current raised to a power term and multiplying the ratio by the third test current, in which the power term comprises a function of a first tuning parameter and a second tuning parameter. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. An analyte measurement system to measure at least glucose concentration in physiological fluid of a user, the system comprising:
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a test strip including a substrate having a reference electrode and a working electrode coated with a reagent layer disposed on a matrix layer having a mediator, the electrodes being connected to corresponding contact pads; and an analyte meter having a test circuit in connection with a test strip port that receives the contact pads of the test strip so that the meter is configured to apply a test voltage after deposition of physiological fluid on the electrodes and determine a hematocrit-corrected the glucose concentration from measured first, second and third test currents at first, second, and third discrete intervals after application of the test voltage by the meter. - View Dependent Claims (30, 31, 32, 33)
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Specification