factor VIII activity

It is used in cases of acute haemorrhage, pre-operative and post-operative treatment and prophylaxis in haemophilia A patients (congenital factor VIII deficiency) and in patients with an acquired reduction in factor VIII activity.

She wasn't really finding very much Factor VIII activity, and then someone mentioned to her that when they thawed this large amount of plasma, there was always some mucky stuff at the bottom of it, and she said, "Well, send me some of that, too."