Virally-safe plasma-derived factor viii composition

摘要

Factor VIII composition (A) of plasma origin and free of virus is produced by filtration through a nanometer filter of nominal pore opening 15+-2 nm to 23+-2 nm and includes von Willebrand factor (vWF) with not over 15% in the form of decamers or higher multimers. Independent claims are also included for the following: (1) method for testing the viral security of a factor VIII composition of plasma origin, prepared by nanometer filtration, by determining the level of residual highly multimeric vWF; and (2) method for preparing (A) by filtration through a specified filter and determining the proportion of vWF present as decamers or higher multimers. ACTIVITY : Hemostatic. No biological data is given. MECHANISM OF ACTION : Protein replacement.