von Willebrand Factor Antigen Test

The von Willebrand Factor Antigen Test measures the amount of a specific protein called von Willebrand factor (vWF) in your blood. This protein is essential for normal blood clotting, helping blood to stick together and form clots to stop bleeding. The test helps doctors evaluate if you have a bleeding disorder called von Willebrand disease or other issues affecting clotting. Results show whether your vWF levels are normal, elevated, or low, guiding diagnosis and treatment to prevent or manage bleeding problems.