Factor VIII deficient plasma for laboratory tests prepared from normal plasma and a human antibody.


Plasma from a patient factor VIII inhibitor was mixed at several low concentrations with fresh normal plasma. The factor VIII deficient plasmas obtained after a short incubation period were used as substrate plasmas in the normal one-stage factor VIII assay method. Results obtained using 0.5-1% of the inhibitor plasma in normal plasma compared favourably… (More)


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