Our November, 2020 Quick Question asks, what von Willebrand factor activity assay is being used in your facility? Click here for the ISTH summary: Bodo I, Eikenboom J, Montgomery R, et al. Platelet-dependent von Willebrand factor activity. Nomenclature and methodology: communication from the SSC of the ISTH. J Thromb Haemost. 2015; 13:1345–50. doi:10.1111/jth.12964; or click here for a summary table derived from the article by Dr. Jameel Abdulrehman.