Monitoring the New Antithrombotic Drugs

In the above-mentioned article, published in Seminars in Thrombosis and Hemostasis 2004; Volume 30, Number 6, Fig. [10] on page 692 is incorrect. The curves in the figure are mislabeled and should be interchanged such that fondaparinux is represented by the box and DX-9065a by the ellipse. The correct figure is given below.

Figure 10 Factor Xa inhibitors have varying responses in the clot-based anti-factor Xa assay (Heptest, Haemachem). The heparin pentasaccharide fondaparinux produces a dose-dependent linear response, whereas the Heptest is insensitive to the direct inhibitor DX-9065a.