Method for the detection of antibodies and/or antigens in a...

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G01N 33/80 (2006.01) G01N 33/53 (2006.01) G01N 33/543 (2006.01)

Patent

CA 2495728

The invention relates to a method for detecting antibodies or antigens in a test liquid by means of a reaction with a given specific bonding partner. According to the inventive method, the antigens are tied to a carrier, and the resulting sample mixture is subjected to an incubation step and then centrifuged by means of a particle-buffer mixture. An agglutinate comprising the antigen that is to be detected, the carrier, and antibodies is formed in case of a positive antigen-antibody reaction. A predefined quantity of the incubated sample mixture is added to a predefined quantity of a buffer- particle mixture which is disposed inside a detection receptacle. The buffer- particle mixture is provided with an embedding buffer consisting of an aqueous solution of dextran and/or polyethylene glycol, glycine, and/or trisodium citrate.

La présente invention concerne un procédé pour identifier des anticorps ou des antigènes dans un liquide à tester, par mise en réaction avec un partenaire de liaison spécifique prédéfini. Les antigènes sont liés à un support et le mélange d'échantillon ainsi établi est mis en incubation, puis est centrifugé à travers un mélange particule-tampon. Une agglutination d'antigène à identifier, support et anticorps se forme en cas de réaction antigène-anticorps positive. Une quantité prédéfinie du mélange d'échantillon incubé est ajoutée à une quantité prédéfinie d'un mélange particule-tampon se trouvant à l'intérieur d'un récipient d'identification. Ce mélange particule-tampon présente un tampon d'incorporation constitué d'une solution aqueuse de dextrane et/ou de polyéthylèneglycol, de glycine et/ou de citrate trisodique.

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