Patent ID: 6964871
Filing Date: 2005-11-15
Classification: C12Q,G01N,Y10T

Abstract:
1. A test strip for measuring glucose in a blood sample, said test strip comprising: a base layer, said base layer having a proximal end and a distal end, said proximal end being narrower than said distal end; at least four electrodes disposed on said base layer, said at least four electrodes including a working electrode, a counter electrode, a fill-detect anode, and a fill-detect cathode; a plurality of electrical contacts disposed on said base layer, said plurality of electrical contacts including a working electrode contact, a counter electrode contact, a fill-detect anode contact, and a fill-detect cathode contact; a plurality of conductive traces disposed on said base layer, said plurality of conductive traces electrically connecting said working electrode to said working electrode contact, said counter electrode to said counter electrode contact, said fill-detect anode to said fill-detect anode contact, said fill-detect cathode to said fill-detect cathode contact; an auto-on conductor disposed on said base layer; a first dielectric layer disposed on said base layer, said first dielectric layer covering portions of said working electrode and said counter electrode, so as to define an exposed working electrode portion and an exposed counter electrode portion; a second dielectric layer disposed on said base layer, said second dielectric layer having a slot, said working electrode, said counter electrode, said fill-detect anode, and said fill-detect cathode being disposed in said slot, said slot having a proximal end and a distal end, said proximal end of said slot being aligned with said proximal end of said base layer; a reagent layer disposed in said slot, said reagent layer including glucose oxidase and a mediator; and a porous cover disposed on said second dielectric layer, wherein said slot defines a testing zone for testing said blood sample, said slot being dimensioned to draw said blood sample in through said proximal end of said slot by capillary action.