System and method for measuring an analyte in a sample
First Claim
1. A system for determining a processing or system error, the system comprising:
- a test strip having a first electrode and a second electrode defining an electrochemical cell that is sized and configured to receive a sample and further having a reagent layer, including a mediator, disposed on the first electrode, anda test meter having a processor programmed with instructions to generate at least one pre-determined voltage between the electrodes for a predetermined amount of time and at least one resulting current of the sample during the pre-determined time, the test meter including a processor for receiving a set of data, the data including at least one applied predetermined voltage and at least one resulting current, wherein the processor is programmed with instructions to utilize the set of data to determine a processing or system error, and in which the processor is programmed with instructions to apply a first test voltage for a first period of time between the first electrode and second electrode sufficient to oxidize a reduced mediator at the second electrode and a second test voltage between the first and second electrode sufficient to oxidize the reduced mediator at the first electrode, the processor being further programmed with instructions to measure a first test current and a second test current occurring during the second test interval wherein the processor is further programmed with instructions to determine whether the test strip has a defect using an equation based on the first test current and second test current.
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Abstract
Methods of determining a corrected analyte concentration in view of some error source are provided herein. The methods can be utilized for the determination of various analytes and/or various sources of error. In one example, the method can be configured to determine a corrected glucose concentration in view of an extreme level of hematocrit found within the sample. In other embodiments, methods are provided for identifying various system errors and/or defects. For example, such errors can include partial-fill or double-fill situations, high track resistance, and/or sample leakage. Systems are also provided for determining a corrected analyte concentration and/or detecting some system error.
188 Citations
14 Claims
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1. A system for determining a processing or system error, the system comprising:
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a test strip having a first electrode and a second electrode defining an electrochemical cell that is sized and configured to receive a sample and further having a reagent layer, including a mediator, disposed on the first electrode, and a test meter having a processor programmed with instructions to generate at least one pre-determined voltage between the electrodes for a predetermined amount of time and at least one resulting current of the sample during the pre-determined time, the test meter including a processor for receiving a set of data, the data including at least one applied predetermined voltage and at least one resulting current, wherein the processor is programmed with instructions to utilize the set of data to determine a processing or system error, and in which the processor is programmed with instructions to apply a first test voltage for a first period of time between the first electrode and second electrode sufficient to oxidize a reduced mediator at the second electrode and a second test voltage between the first and second electrode sufficient to oxidize the reduced mediator at the first electrode, the processor being further programmed with instructions to measure a first test current and a second test current occurring during the second test interval wherein the processor is further programmed with instructions to determine whether the test strip has a defect using an equation based on the first test current and second test current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification