Diagnostic performance of VWF (for COVID-19 diagnosis, prediction of COVID severity and prediction of thrombotic events), LA-1 (for COVID-19 diagnosis, and prediction of COVID severity) and ATIII (for diagnosis of COVID-19) were determined by receiver operator characteristics curve (ROC) by using MedCalc, version 14 (MedCalc Software, Mariakerke, Belgium). Here, VWF is linked to COVID-19.