Patent ID: 8088333
Filing Date: 2012-01-03
Classification: A61B,G01N

Abstract:
1. An apparatus for detecting an analyte in a fluid, the apparatus comprising: first and second analyte reaction surfaces disposed in series with respect to one another, and a conduit for channeling said analyte-containing fluid past the first and second analyte reaction surfaces in series, an interactant being disposed on said first and second analyte reaction surfaces that reacts with the analyte to produce an interaction that can be sensed, the interactant on the first and second analyte reaction surfaces being the same; a sensor disposed to detect said interaction for the first and second analyte reaction surfaces; and at least one replenishment region disposed between said first and second analyte reaction surfaces, whereby analyte concentration in said fluid that was depleted by said interaction at the first analyte reaction surface is replenished before contacting the second analyte reaction surface.