Position paper on laboratory testing for patients with haemophilia. A consensus document from SISET, AICE, SIBioC and SIPMeL.

Haemophilia is an X-linked congenital haemorrhagic disorder characterised by low (or dysfunctional) levels of factor (F) VIII (haemophilia A) or FIX (haemophilia B). Affected females are asymptomatic carriers of the disease and affected males present with the phenotypic disorder characterised by bleeding events (often spontaneous and life-threatening) in the soft tissues and joints. In the most severe forms, bleeding symptoms start early in the...