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Biosensor having improved hematocrit and oxygen biases

  • US 20040079653A1
  • Filed: 10/23/2002
  • Published: 04/29/2004
  • Est. Priority Date: 10/23/2002
  • Status: Active Grant
First Claim
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1. A biosensor strip comprising:

  • (a) an electrode support;

    (b) a first electrode disposed on said electrode support, said first electrode being a working electrode, said working electrode comprising a working ink deposited on an electrically conductive material, wherein said working ink comprises an enzyme, a mediator, and at least one metal ion selected from the group consisting of a transition metal ion and heavier alkaline earth metal ion, wherein said mediator is 1,10-phenanthroline-5,6-dione or a derivative thereof;

    (c) a second electrode disposed on said electrode support, said second electrode being a reference electrode; and

    (d) a third electrode disposed on said electrode support, said third electrode being a counter electrode, said counter electrode comprising an electrically conductive material.

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