Has anybody mentioned testing for clotting disorders? After a couple of DVTs from surgeries and history of TIAs a neurologist suggested testing for clotting disorders for my father. Note his father died after clotting from an abdominal surgery. My father tested positive for Factor V Leiden (common among northern Europeans). Factor V by itself is not necessarily a problem but he also had Protein S deficiency which multiplied his possibility of clotting. That was before eliquis and drugs so he was put on Coumadin.