Compositions containing a urea derivative dye for detecting...

G - Physics – 01 – N

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G01N 33/52 (2006.01) C12Q 1/26 (2006.01) C12Q 1/28 (2006.01)

Patent

CA 2412966

Compositions, reagent test strips, analyte detection systems and kits of the same, as well as methods for their use in the detection of an analyte in a sample, are provided. The subject compositions are characterized by having a positively charged porous matrix and a urea derivative dye on at least one surface of the matrix, where in many preferred embodiments the urea derivative dye is a negatively charged urea derivative dye. In many preferred embodiments, the subject compositions further include at least one additional reagent member of a peroxide producing signal producing system, e.g., an analyte oxidase and/or a peroxidase. The subject compositions, test strips, analyte detection systems and kits find use in the detection of a wide variety of analytes in a sample, such as a physiological sample, e.g., blood or a fraction thereof.

L'invention concerne des compositions, des bandelettes de réactif, des systèmes de détection d'analysat et des kits de ces éléments, mais aussi des procédés relatifs à l'utilisation des produits considérés pour la détection d'analysats dans les échantillons. Lesdites compositions ont une matrice poreuse à charge positive, et un colorant à dérivé de l'urée est appliqué au moins sur une surface de la matrice. Dans de nombreux modes de réalisation préférés, ce colorant est un colorant à charge négative, et les compositions comprennent en outre au moins un réactif additionnel de système de production de signaux produisant du peroxyde (par exemple, oxydase d'analysat et/ou peroxydase). Les produits considérés (compositions, bandelettes de réactif, systèmes de détection d'analysat et kits) sont utiles pour la détection d'une gamme d'analysats dans un échantillon, du type échantillon physiologique (par exemple, sang), ou fraction de cet échantillon.

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