Blood clots
Blood clots


Factor XII (Hageman factor) deficiency

Definition:
This is an inherited disorder that causes prolonged clotting (coagulation) of blood in a test tube without a clinical bleeding tendency, and results from a deficiency of the plasma protein factor XII.

Causes, incidence, and risk factors:
Factor XII deficiency is a hrare ereditary disorder that is usually found when clotting tests are done for routine screening. It is not associated with abnormal bleeding.


Review Date: 8/18/2003
Reviewed By: Corey Cutler, M.D., M.P.H., F.R.C.P.C, Department of Medical Oncology, Dana-Farber Cancer Institute; Instructor in Medicine, Harvard University, Boston, MA. Review provided by VeriMed Healthcare Network.

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