RT Journal Article SR Electronic T1 Hemophilia JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP 21 OP 26 DO 10.29074/ascls.2018001289 VO 32 IS 1 A1 Smith, Larry J. YR 2019 UL http://hwmaint.clsjournal.ascls.org/content/32/1/21.abstract 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.