Patent ID: 7109042
Filing Date: 2006-09-19
Classification: G01N,Y10S

Abstract:
1. A test device for determination of an analyte in a liquid sample, comprising: (a) a nitrocellulose carrier, (b) a binding reagent effective to capture analyte, when present, in a defined detection zone of the nitrocellulose carrier; (c) a labeled reagent which is freely mobile in the nitrocellulose carrier in the presence of the liquid sample, said labeled reagent being selected such that it is captured in the detection zone when analyte is present in the liquid sample; (d) a sample receiving member; and (e) a control zone, disposed on or in the nitrocellulose carrier on a side of the detection zone remote from the sample receiving member, wherein the control zone comprises a control binding reagent which binds the labeled reagent whether or not analyte is present in the sample; wherein liquid sample applied to the sample receiving member is transported to and then along the length of the nitrocellulose carrier to pass through the detection zone, and wherein the detection of labeled reagent in the detection zone is indicative of the presence of analyte in the liquid sample.