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SYSTEMS AND METHODS TO COMPENSATE FOR SOURCES OF ERROR DURING ELECTROCHEMICAL TESTING

  • US 20130277234A1
  • Filed: 06/18/2013
  • Published: 10/24/2013
  • Est. Priority Date: 12/22/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • applying a first direct current (DC) pulse of electrical excitation to a body fluid sample in an analyte sensor, the first DC pulse being sufficient to generate a first current response;

    determining a first plurality of current measurements by measuring the first current response at a plurality of times during the first DC pulse, the first plurality of current measurements being sufficient to identify a compensation based on one or both of reaction rate and blank current interferent;

    applying a second DC pulse of electrical excitation to the body fluid sample, the second DC pulse being sufficient to generate a second current response;

    determining a second plurality of current measurements by measuring the second current response at a plurality of times during the second DC pulse; and

    determining a concentration of an analyte in the body fluid sample based on the first and second pluralities of current measurements, wherein the determined concentration is compensated for one or both of reaction rate and blank current interferent sources as a result of the first plurality of current measurements, and wherein the determined concentration is compensated based on a reaction rate determined by measuring a time to reach peak current response during the first DC pulse and/or is based on a reaction rate determined by the shape of the first current response to the first DC pulse.

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