RT Journal Article SR Electronic T1 Hemophilia: Where are we today? JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP ascls.118.001271 DO 10.29074/ascls.118.001271 A1 Larry J Smith A1 Donna D Castellone A1 Michael A Nardi YR 2019 UL http://hwmaint.clsjournal.ascls.org/content/early/2019/03/28/ascls.118.001271.abstract AB Hemophilia is a rare congenital bleeding disorder characterized by decreased levels of coagulation factor VIII or factor IX in the circulation. The disorder is associated with lifelong bleeding that ranges from mild to severe in affected individuals. Treatment requires replacement of the missing factor and is often associated with the development of antibodies that may exacerbate the bleeding diathesis seen in these individuals. The clinical laboratory plays a unique role in the diagnosis of hemophilia and in monitoring the effectiveness of standard replacement therapy, as well as many of the newer replacement therapies that have been developed.