F10 and Venous thrombosis: Interestingly, desialylation was obvious in samples collected after arterial thrombotic events and associated with reduced anti-FXa activity (36% and 42%), lower platelet counts (122 × 109/L and 103 × 109/L) and decreased glomerular filtration rate (GFR) (38.9 mL/min and 34.8 mL/min) whilst at the time of venous thrombosis, when desialylation was not evident, she had a platelet count of more than 300 × 109/L, anti-FXa activity of 50% and GFR of 57.6 mL/min.