Patent ID: 6063337
Filing Date: 2000-05-16
Classification: G01N

Abstract:
A test strip for a measuring device for optically determining the concentration of a substance in a body fluid, especially for blood sugar measurement, with a carrier on which a measuring field including a first absorbent material is formed, characterized:in that the carrier includes a bottom layer and a cover layer, which bottom layer and cover layer are separated from one another by a spacing layer;in that in the bottom layer a pass through opening covered by the measuring field is provided for a measuring beam of a measuring optic system;in that in the cover layer a drop application opening is formed, which drop application opening is so displaced from the measuring field that the measuring field and the drop application opening do not overlap;in that the spacing layer has a recess including both the measuring field and the drop application opening,the absorbent material being located in the recess and covering the measuring field, but not extending to nor covering the drop application opening, so that a fluid applied through the drop application opening can flow freely through the recess from the drop application opening to the absorbent material; andin that the spacing layer is made of a second absorbent material having an absorption response retarded in comparison to that of the first absorbent material of the measuring field.