Antenatal screening for down's syndrome

G - Physics – 01 – N

Patent

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Details

G01N 33/76 (2006.01) G01N 33/68 (2006.01) G01N 33/74 (2006.01) A61B 8/08 (2006.01)

Patent

CA 2330538

A method of screening for fetal Down's syndrome is described. Screening marker levels are measured. These may be measurements of a biochemical marker in a maternal sample or measurements of a marker from an ultrasound scan. The marker levels are used to calculate a risk of Down's syndrome. Instead of using markers from a single stage of pregnancy, the method uses markers from two or li more different stages of pregnancy, typically one being in the first and another being in second trimester. The method may be automated.

L'invention concerne un procédé de dépistage de la trisomie 21 chez le foetus. Des niveaux de marqueurs de dépistage sont mesurés. Il peut s'agir de mesures d'un marqueur biochimique dans un échantillon maternel ou de mesures d'un marqueur à partir d'un examen échographique. Les niveaux de marqueurs sont utilisés pour calculer un risque du syndrome de Down. A la différence de l'art antérieur qui utilisait des marqueurs d'une seul étape de la grossesse, ce procédé utilise des marqueurs de deux étapes différentes ou plus de la grossesse, généralement au cours du premier trimestre et du deuxième trimestre. Ce procédé peut être automatisé.

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