System and method for analyte measurement
First Claim
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1. An instrument for determining concentration of glucose in a blood sample, comprising:
- a display;
first and second terminals for contacting complimentary first and second terminals of an electrochemical cell adapted to receive a blood sample;
an assessment controller configured and arranged to;
detect deposit of the sample in the cell;
determine sufficiency of volume of the deposited sample;
determine a correction value based on an electrical response from the cell;
obtain an indicated glucose concentration by assessing a reaction of glucose in the blood sample with a chemistry provided in the cell;
apply the correction value to the indicated glucose concentration to arrive at an actual glucose concentration, the actual glucose concentration comprising a compensated indication of the glucose concentration; and
display the actual glucose concentration on the display no more than 10 seconds from the detection of deposit of the sample.
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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.
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Citations
13 Claims
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1. An instrument for determining concentration of glucose in a blood sample, comprising:
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a display; first and second terminals for contacting complimentary first and second terminals of an electrochemical cell adapted to receive a blood sample; an assessment controller configured and arranged to; detect deposit of the sample in the cell; determine sufficiency of volume of the deposited sample; determine a correction value based on an electrical response from the cell; obtain an indicated glucose concentration by assessing a reaction of glucose in the blood sample with a chemistry provided in the cell; apply the correction value to the indicated glucose concentration to arrive at an actual glucose concentration, the actual glucose concentration comprising a compensated indication of the glucose concentration; and display the actual glucose concentration on the display no more than 10 seconds from the detection of deposit of the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification