Identification of a Patient with a Hereditary Deficiency of Prekallikrein and/or High Molecular Weight Kininogen
|To evaluate a patient with a prolonged aPTT for evidence of a hereditary deficiency of prekallikrein and/or high molecular weight kininogen.|
|laboratory tests, criteria for diagnosis|
Prekallikrein, high molecular weight kininogen and Factor XII are the contact factors involved in initiation of coagulation. Deficiencies of prekallikrein and/or high molecular weight kininogen are rare.
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