[Hereditary factor V deficiency and factor V inhibitor without bleeding. Rare causes of pathological screening tests of coagulation]. / Hereditärer Faktor-V-Mangel und Faktor-V-Inhibitor ohne Blutungsneigung. Seltene Ursachen pathologischer Globaltests.

ABSTRACT

Isolated reduction in factor V activity either occur in form of a hereditary deficiency of factor V as an acquired inhibitor against factor V. Diagnosis can not be made by bleeding alone because in both cases it can occur or not occur. Two patients were investigated showing pathological screening tests of coagulation without bleeding. A hereditary and an acquired deficiency of factor V were proved.