System and method for analyte measurement employing maximum dosing time delay
First Claim
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1. A method of performing a measurement on a biological fluid in a test strip comprising:
- providing a biological fluid test strip including a capillary fill chamber extending a length along the test strip from an intake opening to a terminus, a first pair of electrodes in operative communication with the chamber, and a second pair of electrodes in operative communication with the chamber;
dosing the test strip with a biological fluid effective to cause the biological fluid to flow from the intake opening toward the terminus;
applying a first test signal to one of the first pair of electrodes;
measuring a first response to the first test signal at the other of the first pair of electrodes;
maintaining the first pair of electrodes in an inoperative state upon the measuring the first response;
applying a second test signal to one of the second pair of electrodes;
measuring a second response to the second test signal at the other of the second pair of electrodes; and
performing a measurement upon the biological fluid after the measuring the second response.
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Abstract
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
202 Citations
11 Claims
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1. A method of performing a measurement on a biological fluid in a test strip comprising:
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providing a biological fluid test strip including a capillary fill chamber extending a length along the test strip from an intake opening to a terminus, a first pair of electrodes in operative communication with the chamber, and a second pair of electrodes in operative communication with the chamber;
dosing the test strip with a biological fluid effective to cause the biological fluid to flow from the intake opening toward the terminus;
applying a first test signal to one of the first pair of electrodes;
measuring a first response to the first test signal at the other of the first pair of electrodes;
maintaining the first pair of electrodes in an inoperative state upon the measuring the first response;
applying a second test signal to one of the second pair of electrodes;
measuring a second response to the second test signal at the other of the second pair of electrodes; and
performing a measurement upon the biological fluid after the measuring the second response. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of indicating acceptable fill time of a biological fluid in a test strip comprising:
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providing a biological fluid test strip including a capillary fill chamber extending a length along the test strip from an intake opening to a terminus, a first pair of electrodes in operative communication with the chamber, and a second pair of electrodes in operative communication with the chamber;
dosing the test strip with a biological fluid effective to cause the biological fluid to flow from the intake opening toward the terminus;
flowing a biological fluid from the opening toward the terminus;
first determining when the biological fluid contacts the first electrodes;
second determining when the biological fluid contacts the second electrodes;
determining a fill time value based upon the first determining and the second determining; and
comparing the fill time value to a predetermined value. - View Dependent Claims (8, 9, 10, 11)
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Specification