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Method and apparatus for assay of electrochemical properties

  • US 8,123,920 B2
  • Filed: 03/05/2009
  • Issued: 02/28/2012
  • Est. Priority Date: 08/21/2003
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • (a) a housing having a space for receiving an electrochemical cell comprising two electrodes;

    (b) means for applying a potential or a current between the two electrodes of the electrochemical cell when it is received within the housing;

    (c) means for measuring oxidation or reduction of an analyte or a mediator in an analyte-detection system occurring within the electrochemical cell when the potential or current is being applied;

    (d) means for switching the potential or current off after a period of time during which a chemical potential gradient is established between the two electrodes;

    (e) means for monitoring the decay of the chemical potential gradient after the potential or current is switched off;

    (f) programmed data processing means for combining the measured oxidation or reduction with the monitored decay to produce an indication of the presence of the analyte in the sample; and

    (g) output means for conveying the indication of the presence of the analyte in the sample to a user.

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