Factor XII (Hageman factor) deficiency

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Encyclopedia -> Disease -> F -> Factor XII (Hageman factor) deficiency

Alternate Names: Hageman factor

Causes and Risks: Factor XII deficiency is not associated with abnormal bleeding and is a rare disorder.

Prevention: This is an inherited disorder; there is no known way to prevent it.

Symptoms: Note: There are usually no symptoms.

Signs and Tests:

prolonged partial thromboplastin time
abnormal Factor XII assay

Treatment: Treatment is generally unnecessary.

Prognosis: The outcome is expected to be good even without treatment.

Complications: There are usually no complications.

(This condition is usually discovered by the health care provider when prolonged clotting is noticed in the process of running other laboratory tests).

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