| abstract |
The present invention relates to analytical devices and methods forndetermining the presence or amount of an analyte in a test sample. Thenanalytical devices comprise an inlet port, a vent, and an array of structuresnhaving a plurality of channels. The structures have immobilized polycationicnmaterial attached to the surface of the structures, the polycationic materialnbeing capable of binding a polyanionic material which is coupled to annanalyte-specific binding member. Analyte in the test sample is therebyncaptured by the immobilized polycationic material where it is detected by andetection system. |