Test carrier and method for the analytical determination of a component of a body fluid

US4839297A · kind A · utility

Assignee

• Boehringer Mannheim GmbH · DE

Inventors

• Helmut Freitag · Indianapolis, US
• Joachim Steinbiss · Lorsch, DE
• Anselm Rothe · Birkenau, DE

Key dates

• Filing date: Nov 9, 1987
• Grant date: Jun 13, 1989
• Expiry date: Nov 9, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S435/805
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention provides a test carrier (1) for the analytical determination of a component of a body fluid with a base layer (2) and at least two planar test layers which, in the initial state of the test carrier, before carrying out the determination, are separate from one another but can be brought into contact with one another by external manipulation, wherein a first test layer (8) and a second test layer (10) are arranged on the base layer essentially next to one another but separated in the initial state by a gap, a contact element (11, 17, 18, 20) being provided which consists of a capillary-active material which is so dimensioned that it can bridge the gap (12) and which is so mounted and arranged that, in a first position, it cannot contact at least one of the test layers (8, 10) but, by external pressure, it can be brought into a second position in which it contacts both test layers in such a manner that a liquid exchange between the test layers is possible.