Comparison of Factor VIII Levels after Adrenalin in Classic Hemophilia and von Willebrand’s Disease (vWd)^[*]

Summary

The factor VIII response to adrenalin was compared in 5 patients with von Willebrand’s disease (vWd) and 10 hemophiliacs with baseline factor VIII procoagulant activity (VIIIAHF) of 0.01 u/ml or greater. Patients with vWd showed a two-fold VIII AHF increase, while those with hemophilia showed no significant change 1 hr following the subcutaneous injection of adrenalin. These results suggest that the adrenalin stimulation test may be of value in distinguishing certain patients with mild hemophilia from those with vWd.

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