F2 and Venous thrombosis: Among patients with CVC-associated thrombosis, prothrombin time (89 ± 2.4%), aPTT (34.8 ± 2.5 s), d-dimers (1.6 ± 0.1 mg/L), fibrinogen (2.95 ± 0.2 mg/L), antithrombin III (91.7 ± 3.65%), and platelet count (246000 ± 21000/μL) were within the expected ranges (immediately before catheter insertion and at the time of thrombosis (shown data)) and did not differ significantly from those patients without CVC-associated thrombosis at comparable time points.