Diagnostic in vitro method for assessing von willebrand...

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G01N 33/86 (2006.01)

Patent

CA 2710340

The invention relates to an in-vitro method for diagnosing Von Willebrand Disease (VWD) and an increased bleeding risk associated with von Willebrand Disease and/or acquired or congenital platelet function defects which reduce the interaction of von Willebrand Factor (VWF) with platelets. The in-vitro method of the invention may also be used to diagnose further bleeding risks. The test is suitable for use as a screening test based on whole blood and has the additional benefit of being suitable as a point of care test. The method involves the incubation of a sample containing platelets and haemostasis factors with an activator of platelet aggregation and the measurement of the viscoelastic change after inducing coagulation, e.g. by means of thromboelastography (TEG).

La présente invention concerne un procédé in vitro permettant de diagnostiquer la maladie de Von Willebrand (VWD) et un risque accru d'hémorragie associé à la maladie de Von Willebrand et/ou aux anomalies de la fonction plaquettaire congénitales ou acquises, qui réduisent l'interaction du facteur Willebrand avec les plaquettes. Le procédé in vitro de la présente invention peut également être utilisé pour diagnostiquer d'autres risques d'hémorragie. Le test afférent est adapté pour être utilisé en tant que test de dépistage basé sur le sang total, et présente l'avantage supplémentaire d'être adapté comme point de test de soin. Ledit procédé implique l'incubation d'un échantillon contenant des plaquettes et des facteurs d'hémostase avec un activateur d'agrégation plaquettaire, ainsi que la mesure du changement viscoélastique après l'induction de la coagulation, par exemple au moyen de la thromboélastographie (TEG).

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