Patent ID: 7189522
Filing Date: 2007-03-13
Classification: G01N

Abstract:
1. A test device for use with a solution and for use with a conjugate having a marker, the test device for determining the presence of a ligand in a liquid sample, the test device comprising: a) a first sorbent strip having a first length and a first width, said first length being substantially larger than said first width, and having a first location for receiving the solution and defining a first migration path for the solution and the conjugate; b) a second sorbent strip having a second length and a second width, said second length being substantially larger than said second width, said second sorbent strip distinct from said first sorbent strip having a second location for receiving the liquid sample and defining a second migration path for the sample distinct from said first migration path; and c) a test site located on or in at least one of said first sorbent strip or said second sorbent strip, said test site having an immobilized ligand-binding mechanism, said first and second sorbent strips touching each other at the test site, and said second migration path extending laterally from said second location to at least said test site such that application of the liquid sample to the second location requires time for the liquid sample to laterally flow to the test site and does not immediately wet the test site upon application.