Have a blood clot above left knee lots of pain and stiffness in both itching inside my right leg can you get another blood clot even though taking war?

Possibly: The ability of warfarin to prevent or treat a blood clot is partly based upon how well it is keeping your blood at a therapeutic level, which is usually checked with a blood test called prothrombin time. Diet can also have a large impact on the ability of the warfarin to work. If you have any concern, I would be rechecked for a dvt. In some cases, clots can be surgically removed ( throne tony)