Immunoassay reagents and immunoassay method

G - Physics – 01 – N

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G01N 33/543 (2006.01) G01N 33/535 (2006.01) G01N 33/542 (2006.01)

Patent

CA 2331587

Immunoassay reagents by which an ultraminor constituent (for example, an antigen or an antibody) contained in a specimen can be assayed at a high sensitivity without requiring any operation for separating, for example, immunologically reacted components from unreacted ones, or while simplifying such an operation. These immunoassay reagents aim at quantitating an antigen or an antibody to be assayed in a specimen and contain an insoluble support carrying an antibody or an antigen against the above-mentioned antigen or antibody and an enzyme, an enzyme inhibitor inhibiting the activity of the above enzyme, and a substrate of the above enzyme.

L'invention concerne des immunoréactifs qui permettent de doser un constituant ultramineur (par exemple, antigène ou anticorps) contenu dans un échantillon, en bénéficiant d'une sensibilité élevée, sans faire appel à une opération de séparation, par exemple entre constituants qui ont fait l'objet d'une immunoréaction et constituants qui n'ont pas réagi, ou qui permettent de simplifier l'opération de séparation si celle-ci est nécessaire. Les immunoréactifs considérés permettent donc d'évaluer quantitativement un antigène ou un anticorps destiné à être dosé dans un échantillon. Ils contiennent un support insoluble porteur d'un anticorps ou d'un antigène agissant contre l'antigène/anticorps mentionné précédemment, et une enzyme, un inhibiteur enzymatique inhibant l'activité de l'enzyme considérée, et un substrat de l'enzyme en question.

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