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Accurate analyte measurements for electrochemical test strip based on sensed physical characteristic(s) of the sample containing the analyte and derived biosensor parameters

  • US 9,903,831 B2
  • Filed: 12/28/2012
  • Issued: 02/27/2018
  • Est. Priority Date: 12/29/2011
  • Status: Active Grant
First Claim
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1. A method of determining an analyte concentration from a fluid sample with a biosensor having at least two electrodes and a reagent disposed on at least one of the electrodes, the method comprising:

  • starting an analyte test sequence upon deposition of a sample on the biosensor;

    applying a first signal to the sample to determine a physical characteristic of the sample wherein the physical characteristic is hematocrit level;

    driving a second signal to the sample to cause a chemical transformation of the sample;

    measuring at least one output signal from the sample;

    obtaining a biosensor parametric factor from a look-up table or matrix based on the determined hematocrit level; and

    calculating an analyte concentration based on the biosensor parametric factor and the at least one output signal measured at one of a plurality of predetermined time positions from the start of the test sequence based on the relationship;

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