Patent ID: 7829023
Filing Date: 2010-11-09
Classification: G01N,Y10T

Abstract:
1. A test strip, comprising: a base substrate having a reagent layer disposed thereon; a chamber cover connected to the base substrate and overlying the base substrate and the reagent layer; a body cover connected to and overlying the base substrate, the body cover being horizontally separated from the chamber cover to form a horizontal gap between the body cover and the chamber cover; a sample receiving chamber disposed between the base substrate and the chamber cover, the gap being in communication with the sample receiving chamber and defining a vent opening that allows air to escape as fluid enters the sample receiving chamber; wherein the test strip includes two spaced-apart edges defining a width of the test strip, the gap extending across the full width of the test strip to define a slot extending from one of the edges to the other; and wherein the gap is bordered by a hydrophobic region adjacent to the body cover, further wherein sample fluid entering the sample receiving chamber will progress to the gap but no farther.