Background. The one-stage assay is the most common method to measure factor VIII activity (FVIII : C) in hemophilia A patients.\nThe chromogenic assay is another two-stage test involving purified coagulation factors followed by factor Xa-specific chromogenic\nsubstrate. Aim. This study aimed to assess the discrepancy and correlation between the chromogenic and one-stage assays in\nmeasuring FVIII :C levels in hemophilia patients receiving Extended Half-Life ........................
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