Method for measurement of total analyte

G - Physics – 01 – N

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G01N 33/53 (2006.01) G01N 33/543 (2006.01) G01N 33/88 (2006.01)

Patent

CA 2321090

A method of assaying for an analyte which occurs at least partially bound as a complex with its soluble receptor or binding protein, the method comprising the steps of: i) mixing a biological fluid serum sample containing the analyte to be determined with a detergent for dissociating said complex, ii) mixing the sample from step i) with reagents, including a specific binding partner of the analyte for binding to the analyte, for performing a specific binding assay for the analyte, iii) and mixing the sample from step i) with a sequestrant for the detergent, whereby the binding of step ii) is performed in the presence of the sequestrant.

L'invention concerne un procédé de dosage destiné à une substance à analyser qui est au moins partiellement liée sous la forme d'un complexe à son récepteur soluble ou à une protéine de liaison. Le procédé consiste à: 1) mélanger un échantillon de sérum de liquide biologique qui contient la substance à analyser avec un détergent, et ce pour dissocier le complexe; 2) mélanger l'échantillon obtenu au stade 1) à des réactifs qui comprennent un partenaire de liaison spécifique de la substance à analyser, et ce pour effectuer un dosage spécifique de liaison relatif à la substance à analyser; et 3) mélanger l'échantillon obtenu au stade 2) avec un chélateur du détergent, la liaison du stade 2) ayant été effectué en présence du chélateur.

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