Patent ID: 6737277
Filing Date: 2004-05-18
Classification: G01N,Y10S

Abstract:
An immunochemical assay device comprising:a base member; a filter element at least partially disposed on a first portion of said base member, said filter element having located thereon a labeled immunochemical component capable of binding to an analyte of interest in the sample to form an immuno-complex; and a wicking membrane at least partially disposed on a second portion of said base member, said wicking membrance having at least one immobilized substance located thereon in at least one assay indicia zone, said immobilized substance being operable to bind said immuno-complex contained in the sample, wherein said wicking membrane is longer than said filter element, said wicking membrane and said filter element are separate components, said wicking membrane abuts or overlaps said filter element such that an interface is defined there between for passage of the sample from the filter element downstream to said wicking membrane, and said second portion of said base member extends from said first portion to at least said assay indicia zone on said wicking membrane.