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Reagents and methods for detecting analytes

  • US 10,696,998 B2
  • Filed: 08/21/2017
  • Issued: 06/30/2020
  • Est. Priority Date: 12/10/2007
  • Status: Active Grant
First Claim
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1. An electrochemical test sensor comprising:

  • a working electrode having a surface;

    a counter electrode having a surface; and

    a reagent coating at least a portion of the surface of the working electrode and at least a portion of the surface of the counter electrode, the reagent comprising FAD-glucose dehydrogenase, a 3-(2′

    ,5′

    -disulfophenylimino)-3H-phenothiazine mediator having about 5 wt. % sulfate, a phosphate buffer, a surfactant, and a hydroxyethyl cellulose polymer, wherein at least one of the mediator and the buffer includes an inorganic salt, and a ratio of the total inorganic salt to mediator is less than about 3;

    1.

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