PT - JOURNAL ARTICLE AU - Smith, Larry J. TI - Hemophilia AID - 10.29074/ascls.2018001289 DP - 2019 Jan 01 TA - American Society for Clinical Laboratory Science PG - 21--26 VI - 32 IP - 1 4099 - http://hwmaint.clsjournal.ascls.org/content/32/1/21.short 4100 - http://hwmaint.clsjournal.ascls.org/content/32/1/21.full SO - Clin Lab Sci2019 Jan 01; 32 AB - Hemophilia is a rare, congenital bleeding disease with an X-linked recessive inheritance pattern. It is characterized by absent, decreased, or dysfunctional coagulation factor VIII (FVIII) or factor IX (FIX). Individuals with severe hemophilia bleed into the joints, soft tissue, and muscles, which can be debilitating. Although hemophilia is a serious life-long bleeding disease, understanding the pathogenesis of the disease leads to better patient treatment and improved patient outcomes.