PT - JOURNAL ARTICLE AU - Smith, Larry J. AU - Castellone, Donna D. AU - Nardi, Michael A. TI - Hemophilia: Where Are We Today? AID - 10.29074/ascls.2019001271 DP - 2019 Jan 01 TA - American Society for Clinical Laboratory Science PG - 19--20 VI - 32 IP - 1 4099 - http://hwmaint.clsjournal.ascls.org/content/32/1/19.short 4100 - http://hwmaint.clsjournal.ascls.org/content/32/1/19.full SO - Clin Lab Sci2019 Jan 01; 32 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.