Diagnostic test carrier with multilayer field

Details Diagnostic test carrier with multilayer field Diagnostic test carrier with multilayer field

1997-07-21

2000-03-14

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 61, 436 66, 436164, 436169, 436170, 436175, G01N 3349

Patent

active

060369191

ABSTRACT:
The present invention concerns a diagnostic test carrier for the determination of an analyte from whole blood with the aid of a reagent system contained in the carrier which includes a colour forming reagent with a test field which has a sample application side onto which the blood sample is applied and a detection side on which an optically detectable change takes place as a result of the reaction of analyte with the reagent system and which is constructed in such a way that erythrocytes present in the sample do not reach the detection side, which is characterized in that the test field comprises a transparent foil onto which a first and a second film layer are applied on top of one another and wherein the first layer located on the transparent foil scatters light considerably less in a wet state than the overlying second layer and wherein the side of the foil on which the first layer is applied which is opposite to the foil side is the detection side and the side of the second layer which is opposite to the side with which the second layer rests on the first is the sample application side. In addition the invention concerns a method for the determination of an analyte from whole blood with the aid of a diagnostic test carrier according to the invention.

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Derwent Patent Abstract for EP-45476B, Derwent WPI No. 82-12079E, Jul. 1982.
Derwent Patent Abstract for EP-302287, Derwent WPI No. 89-040472, Jun. 1989 .

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