Preincubation in the Prothrombinase-induced Clotting Time test (PiCT) is necessary for in vitro evaluation of fondaparinux and to be avoided for the reversible, direct factor Xa inhibitor, rivaroxaban - Kluft, C; Meijer, P; Kret, R; Burggraaf, J (Int J Lab Hematol, 2013)