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Laboratory diagnosis of vWD involves an initial comparison of the vWF concentration, known as vWF antigen (vWF: Ag) and a measure of its activity (vWF: Act), often followed by more specialized tests such as multimer analysis.

In this leaflet, different cases from congenital and acquired vWD are presented including the multimer distribution pattern with HYDRAGEL von Willebrand multimer assay.

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