Patent ID: 6395227
Filing Date: 2002-05-28
Classification: C12Q,G01N,Y10T

Abstract:
A test strip, for determining the concentration of an analyte in a body fluid, which comprises:a cover sheet, having an elongated window cut through it; a lamellar membrane adjacent to the cover sheet, extending across and into the window and containing a reagent that reacts with the analyte to produce a color change; a porous sheet in fluid communication with the membrane, having a porous, enlarged pillow portion and a compressed portion, the pillow portion being substantially aligned with the window; and a backing sheet, adjoining the porous sheet and having a sample port cut through it; whereby fluid introduced into the sample port can flow through the porous sheet to the membrane, and analyte in the fluid can react with the reagent to produce a color change visible through the window.