July 2022 QQ: Reduced concentration RIPA test.

Our July 2022 Quick Question asks, “What von Willebrand disease [VWD] subtype is identified using the reduced concentration ristocetin-induced platelet aggregometry [RIPA] test?” Many of the VWD types and subtypes are currently identified using molecular diagnosis, however, the “legacy” phenotypic tests often provide a speedy and inexpensive shortcut. This may be one such case. Please select your answer on the right and add your comment below.