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Error Detection in Analyte Measurements Based on Measurement of System Resistance

  • US 20060231424A1
  • Filed: 04/15/2005
  • Published: 10/19/2006
  • Est. Priority Date: 04/15/2005
  • Status: Active Grant
First Claim
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1. A method for determination of an analyte in a sample comprising the steps of:

  • (a) introducing the sample to an electrochemical test strip having working and counter electrodes;

    (b) applying a potential difference, Vapp, between the electrodes of the test strip and observing a current signal sufficient to provide a determination of analyte in the sample;

    (c) switching off the applied potential at time tswtich and determining the magnitude, Vdrop, of a voltage drop arising from series electrode resistance, if present;

    (d) checking the determined magnitude of Vdrop against a predetermined range, and rejecting the test if the magnitude of Vdrop falls outside of the range, and (e) if the magnitude is within the predetermined range, proceeding to display or communicate the result from the determination of analyte.

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