VEGFA and Venous thrombosis: Four studies, with 606 patients (146 with thrombosis), assessed VEGF levels at the time of the thrombotic event, three analyzed serum VEGF levels (Dogan et al, 2006,10Kim et al, 2004,22Ramadan et al, 202123), and one study analyzed plasma VEGF levels (Malaponte et al, 201524).