Electrochemical test strip for reducing the effect of direct interference current
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United States of America Patent
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Issued Date -
Jun 23, 2005
app pub date -
Oct 29, 2004
filing date -
Oct 31, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention describes an electrochemical sensor which is adapted to reduce the effects of interfering compounds in bodily fluids when measuring an analyte in such fluids using an electrochemical strip. The sensor includes a substrate, a first and second working electrodes, and a reference electrode. A reagent layer is disposed on the electrodes such that, in one embodiment it completely covers all of the first working electrode, but only partially covers the second working electrode and, in a second embodiment, it only covers a portion of the first and the second working electrode. The portion of the working electrodes not covered by the reagent layer and is used to correct for the interference effect on the analyte measurement.
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