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Apparatus and method for measuring reaction result of samples on biosensor

  • US 7,678,261 B2
  • Filed: 10/04/2002
  • Issued: 03/16/2010
  • Est. Priority Date: 09/30/2002
  • Status: Active Grant
First Claim
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1. A method for measuring reaction results of a sample using a biosensor having two working electrodes and one reference electrode, comprising:

  • sequentially supplying respective working electrodes with a power supply voltage and measuring a time interval from when an amount of current flowing in a first working electrode begins to be detected until a time when an amount of current flowing in a second working electrode begins to be detected;

    displaying an error message when the measured time interval exceeds a predetermined critical range;

    sequentially re-supplying the respective first and second working electrodes with the power supply voltage when the measured time interval is within the predetermined critical range, and re-detecting the amounts of current flowing in the respective first and second working electrodes;

    reading concentrations corresponding to the amount of current from a memory and calculating an average value from the read concentrations; and

    checking whether a difference between each of the concentrations read from the memory and an average value exceeds a predetermined critical value to display one of an error message and the calculated average value.

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