Method for detecting antibodies

G - Physics – 01 – N

Patent

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Details

G01N 33/564 (2006.01) G01N 33/53 (2006.01) G01N 33/543 (2006.01) G01N 33/566 (2006.01) G01N 33/573 (2006.01)

Patent

CA 2200683

This invention pertains to methods to detect antibodies in a sample. The methods use as amount of antigen that is up to 1000, preferably 10 to 100 times the minimum amount antigen that can be reliably detected and that is less than the maximum expected amount of antibodies in the sample. An antigen: antibody complex is formed and becomes bound to a binding agent that does not bind free antigen. The free antigen is then detected as a measure of antibodies present in the sample.

La présente invention concerne des procédés permettant de détecter des anticorps dans un échantillon. Ces procédés mettent en oeuvre une quantité d'antigène correspondant à 1.000 fois, et de préférence 10 à 100 fois la quantité minimale d'antigène pouvant être détectée avec fiabilité, cette quantité étant inférieure à la quantité maximale attendue d'anticorps dans l'échantillon. Il y a formation d'un complexe antigène-anticorps se liant à un agent de liaison n'établissant pas de liaison avec un antigène libre. L'antigène libre qui est alors détecté constitue la mesure des anticorps présents dans l'échantillon.

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