Disse inhibitorer er sædvanligvis IgG rettet mod faktor VIII’ s prokoagulante aktivitet, som kvantificeres i Bethesda Enheder (BE) pr. ml plasma ved brug af den modificerede Bethesda test.
These inhibitors are usually IgGs directed against the factor VIII procoagulant activity, which are quantified in Bethesda Units (BU) per ml of plasma using the modified Bethesda assay.