F5 and deep vein thrombosis: Based on the above mentioned studies, the risk of PTS in carriers of the most common thrombophilic abnormalities who develop an episode of DVT, does not seem to exceed that expected in non-carriers, and may even be diminished by the carriage of factor V Leiden, perhaps because of the more distal location of the thrombotic episode in carriers as compared with non-carriers of this abnormality [32, 45].