Voltammetric systems for assaying biological analytes
First Claim
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1. A system for determining a concentration of an analyte in a sample, comprising:
- a measuring device including at least two device contacts in electrical communication with a display through electrical circuitry, the measuring device being configured to apply an acyclic scan to the sample; and
a sensor strip receivable by the measuring device, the sensor strip including;
a first sensor strip contact;
a second sensor strip contact;
a working electrode in electrical communication with the first sensor strip contact;
a counter electrode in electrical communication with the second sensor strip contact; and
a first reagent layer on (i) the working electrode, (ii) the counter electrode, or (iii) both the working electrode and the counter electrode, the first reagent layer including an oxidoreductase and at least one species of a redox pair.
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Abstract
The present invention relates to systems, methods, and devices for determining the concentration of an analyte in a sample. The use of linear, cyclic, or acyclic voltammetric scans and/or semi-integral, derivative, or semi-derivative data treatment may provide for increased accuracy when determining the concentration of an analyte in a sample. Hematocrit compensation in combination with the data treatments may reduce the hematocrit effect with regard to a glucose analysis in whole blood. In another aspect, fast scan rates may reduce the hematocrit effect.
46 Citations
17 Claims
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1. A system for determining a concentration of an analyte in a sample, comprising:
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a measuring device including at least two device contacts in electrical communication with a display through electrical circuitry, the measuring device being configured to apply an acyclic scan to the sample; and a sensor strip receivable by the measuring device, the sensor strip including; a first sensor strip contact; a second sensor strip contact; a working electrode in electrical communication with the first sensor strip contact; a counter electrode in electrical communication with the second sensor strip contact; and a first reagent layer on (i) the working electrode, (ii) the counter electrode, or (iii) both the working electrode and the counter electrode, the first reagent layer including an oxidoreductase and at least one species of a redox pair. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for determining a concentration of an analyte in a sample, comprising:
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a measuring device including at least two device contacts in electrical communication with a display through electrical circuitry, the measuring device being configured to apply a voltammetric scan to the sample; and a sensor strip receivable by the measuring device, the sensor strip including; a first sensor strip contact; a second sensor strip contact; a working electrode in electrical communication with the first sensor strip contact; a counter electrode in electrical communication with the second sensor strip contact; and a first reagent layer on (i) the working electrode, the (ii) the counter electrode, or (iii) both the working electrode and the counter electrode, the first reagent layer including an oxidoreductase and at least one species of a redox pair. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification