SYSTEM AND METHOD FOR ANALYTE MEASUREMENT

• US 20080098802A1
• Filed: 01/08/2008
• Published: 05/01/2008
• Est. Priority Date: 12/22/1997
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Operations Limited (Roche Holding AG)
• Inventors: Burke, David, Kuhn, Lance, Beaty, Terry, Svetnik, Vladimir
• Granted Patent: US 7,981,363 B2
• Time in Patent Office: Days
• US Class Current: 73/61.61
• CPC Class Codes: G01N 27/3274 Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration coding of calibration information G01N33/48771
• CPC Class Codes: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/112499 with sample on test slide
• CPC Class Codes: Y10T 436/115831 Condition or time responsive
• CPC Class Codes: Y10T 436/12 Condition responsive control
• CPC Class Codes: Y10T 436/142222 Hetero-O [e.g., ascorbic acid, etc.]
• CPC Class Codes: Y10T 436/143333 Saccharide [e.g., DNA, etc.]
• CPC Class Codes: Y10T 436/144444 Glucose
• CPC Class Codes: Y10T 436/203332 Hydroxyl containing

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.

Claims

1. A meter for use in combination with a disposable electrochemical sensor for detection and/or quantification of an analyte in a liquid sample comprising a timing circuit for controlling the measurement of current indicative of analyte in the sample following detection of sample application to a test strip inserted in the meter, wherein the timing circuit causes the measurement of current to occur at a time 10 seconds or less after the detection of sample application.