Factor V Leiden Home>Conditions_and_Diseases>Blood_Disorders>Blood_Coagulation>Factor V Leiden     Web Pages Living with Factor V Leiden Factor V Leiden is the most common hereditary blood coagulation disorder in the United States. It is present in 5% of the American population. Activated Protein C Resistance Discusses the thrombotic risks of this inherited disorder, also known as Factor V Leiden. The Role of Activated Protein C Resistance in the Pathogenesis of Venous Thrombosis Center for Disease Control's page discussing the background of this disorder including study results, testing, and complications. University of Illinois Patient Resources Description of factor V Leiden, its risks and treatment options. Also discusses the impact of other conditions on this disease. Yahoo! Groups: Leiden Factor V Support Message board and chat room for people diagnosed with the Factor V Leiden genetic disorder. Factor Five Leiden Support Support for sufferers of the Factor Five Leiden blood clotting disorder, an inherited blood condition discovered in 1995. History, glossary, and meeting information (Oregon).