System and methods for determination of analyte concentration using time resolved amperometry
First Claim
Patent Images
1. A method for determining a concentration of an analyte, the steps comprising:
- applying a potential excitation to a fluid sample containing an analyte;
determining if a current decay curve associated with the fluid sample has substantially entered an analyte depletion stage;
measuring a plurality of current values associated with the fluid sample during the analyte depletion stage; and
calculating an analyte concentration based on at least one of the plurality of current values.
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Abstract
A method for determining a concentration of an analyte is disclosed. The method includes applying a potential excitation to a fluid sample containing an analyte and determining if a current decay curve associated with the fluid sample has entered an analyte depletion stage. The method also includes measuring a plurality of current values associated with the fluid sample during the analyte depletion stage and calculating an analyte concentration based on at least one of the plurality of current values.
47 Citations
30 Claims
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1. A method for determining a concentration of an analyte, the steps comprising:
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applying a potential excitation to a fluid sample containing an analyte; determining if a current decay curve associated with the fluid sample has substantially entered an analyte depletion stage; measuring a plurality of current values associated with the fluid sample during the analyte depletion stage; and calculating an analyte concentration based on at least one of the plurality of current values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for determining an analyte concentration in a fluid sample, comprising:
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a set of electrodes positioned within a sample chamber and configured to apply a potential excitation to a fluid sample containing an analyte; a sample chamber having a spacer height of less than about 110 μ
m;a processor configured to; determine if a current decay curve associated with the fluid sample has substantially entered an analyte depletion stage; measure a plurality of current values associated with the fluid sample during the analyte depletion stage; and calculate an analyte concentration based on at least one of the plurality of current values. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A biosensor, comprising:
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a set of coplanar electrodes configured to apply a potential excitation to a fluid sample containing an analyte; and a sample chamber configured to receive the fluid sample and house the electrodes, wherein the sample chamber has a height above the electrodes of less than about 110 μ
m and the height has a coefficient of variation of less than about 4%. - View Dependent Claims (27, 28, 29, 30)
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Specification