Factor XII deficiency is an inherited disorder with no symptoms. Factor XII is a protein involved in blood clotting. A deficiency of this factor does not cause abnormal bleeding in the affected person, but the blood takes longer than normal to clot in a test tube.
Causes, incidence, and risk factors:
Factor XII deficiency is a rare hereditary disorder. It is usually found when clotting tests are done for routine screening. It is not associated with abnormal bleeding.
Review Date: 2/26/2007
Reviewed By: William Matsui, MD, Assistant Professor of Oncology, Division of Hematologic Malignancies, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Hematology
