Method of detecting an antibody in a liquid sample

G - Physics – 01 – N

Patent

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G01N 33/543 (2006.01) G01N 33/58 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2335615

The invention relates to a method of evaluating the immunological status of a subject comprising the steps of 1) determining the content of an antibody in a liquid sample from the subject using an immunoassay, wherein the reaction between the antibody of the sample and a ligand in the form of an antigen, an antibody or a hapten, the ligand being directed to the Fab region of the sample antibody, is carried out in the presence of other constituents of the sample to obtain a measurement 1, 2) determining the content of an antibody in the liquid sample using an immunoassay, wherein the reaction between the antibody of the sample and a ligand in the form of an antigen, an antibody or a hapten, the ligand being directed to the Fab region of the sample antibody, is carried out in the absence of other constituents of the sample to obtain a measurement 2, and 3) interrelating measurements 1 and 2 to express the interference and using the interference as a parameter for evaluating the immunological status of the subject.

L'invention concerne un procédé d'évaluation du statut immunologique d'un sujet, le procédé consistant: 1) à déterminer la concentration d'un anticorps dans un échantillon liquide prélevé sur le sujet par dosage immunologique; on effectue la réaction entre l'anticorps provenant de l'échantillon et un ligand sous forme d'antigène, d'anticorps ou d'haptène en présence d'autres constituants de l'échantillon, le ligand étant dirigé vers la région Fab de l'anticorps provenant de l'échantillon, pour obtenir une mesure 1; 2) à déterminer la concentration d'un anticorps dans l'échantillon liquide par dosage immunologique; on effectue la réaction entre l'anticorps provenant de l'échantillon et un ligand sous forme d'antigène, d'anticorps ou d'haptène en l'absence d'autres constituants de l'échantillon, le ligand étant dirigé vers la région Fab de l'anticorps provenant de l'échantillon, pour obtenir une mesure 2, et 3) à mettre en corrélation les mesures 1 et 2 pour exprimer l'interférence et à utiliser l'interférence comme paramètre d'évaluation du statut immunologique du sujet.

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