Patent ID: RE41264

Claim:
A disposable electrode strip for measuring an analyte in a fluid sample said strip comprising: a laminated strip having a first strip end, a second strip and and a vent opening spaced from said first strip and, said laminated strip comprising a base layer with at least two electrodes delineated thereon, a reagent holding layer carried on said base layer, said reagent holding layer having at least two cutouts, a channel forming layer carried on said reagent holding layer, and a cover; an enclosed channel between said first strip end and said vent opening, said enclosed channel containing said at least two cutouts; a first reagent disposed in a first cutout of said at least two cutouts forming a reference electrode, said first reagent comprising a reference electrode material selected from the group consisting of silver chloride when said reference electrode is silver and a mixture made by combining at least a redox mediator and at least one binder when said reference electrode is selected from the group consisting of gold, gold/tin oxide, palladium, platinum and carbon composition; a second reagent disposed in a second cutout of said at least two cutouts forming a first working electrode, said second reagent comprising a redox mediator, at least one binder, at least one enzyme that is a substrate of said analyte and a peroxidase capable of catalyzing a reaction involving said redox mediator wherein said redox mediator is oxidized wherein said second reagent is water soluble ; and conductive contacts at said second strip end and insulated from said enclosed channel.