For research use only. The Technozym ADAMTS-13 INH ELISA is a test for detection of human autoantibodies (IgG) in serum or plasma against ADAMTS-13, the protease which is responsible for cleaving unusually large vWF (ULvWF). Most of these autoantibodies inhibit ADAMTS-13 activity and thus non-cleaved ULvWF accumulates in plasma. TechnozymADAMTS-13 INH test makes it possible to differentiate between congenital (gene polymorphisms) and acquired (autoantibodies) when coupled to an activity assay.