NORMAL PT (INR), LONG PTT

Bleeding Tendency Normal PT (INR), long PTT Hemophilia* Factor VIII Deficiency D(Hemophilia A) Factor IX Deficiency D(Hemophilia B) Factor XI Deficiency von Willebrand’s Disease with a low Factor VIII No Bleeding Tendency Congenital Acquired Factor VIII Inhibitor Heparin Other Factors (rare) Bleeding/Bruising Approach to Disorders of Coagulation *Indicates Key Condition This is not an exhaustive list of medical conditions. Factor XII Prekallikrein (Fletcher Factor) High Molecular Weight Kininogen (Fitzgerald Factor) Congenital (Intrinsic Pathway Factor Deficiency) Acquired Antiphospholipid Antibodies (APLA)