Patent ID: 6368876
Filing Date: 2002-04-09
Classification: G01N,Y10S

Abstract:
An immunochromatographic assay device for detection of the presence or absence of an analyte in a liquid sample, wherein said immunochromatographic assay device comprises:(a) a separate sample receiving region comprising a porous material which conducts lateral flow of a liquid sample, in lateral flow contact with (b) a separate analyte detection region comprising a porous material which conducts lateral flow of said liquid sample, wherein said analyte detection region comprises a mobile labeling reagent at a discrete labeling situs, and an immobile capture reagent at a discrete capture situs, wherein said labeling reagent is capable of forming a complex with said analyte and said capture reagent is capable of binding said analyte-labeling reagent complex, wherein the back of said porous materials are laminated with a semi-rigid material of at least 0.005 inches thick to produce a device with adequate mechanical strength in the absence of a plastic casing.