Flow through assay device, diagnostic kit comprising said...

G - Physics – 01 – N

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G01N 33/52 (2006.01) G01N 33/543 (2006.01) G01N 33/544 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2431097

The present invention relates to an assay device for testing the presence of an analyte in a given sample comprising: a multilayer support whereon a first analyte-binding compound or analyte-binding complex, able to bind said analyte present in said sample, is immobilized, whereby said analyte is able to bind a second enzyme labeled analyte-binding compound or enzyme labeled analyte- binding complex forming a sandwich complex, whereby said sandwich complex is able to generate upon contact with a suitable precipitating substrate for said enzyme-label a colored deposit in a one step procedure. The invention also relates to a diagnostic kit or a method for the detection of an analyte in any medium.

La présente invention concerne un dispositif d'essai permettant de détecter la présence d'un analyte dans un échantillon donné. Cet analyte comprend : un support multicouche sur lequel est immobilisé un premier composé de liaison de l'analyte ou un premier complexe de liaison de l'analyte capable de se lier à l'analyte présent dans l'échantillon. Ledit analyte est capable de se lier un second composé ou à un second complexe de liaison d'analyte à marquage enzymatique pour former un complexe en sandwich, ledit complexe sandwich pouvant produire, au contact avec un substrat approprié pour ledit marqueur enzymatique, un dépôt coloré en une seule opération. L'invention concerne également une trousse de diagnostic ou une méthode de détection d'analyte dans un milieu quelconque.

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