von Willebrand factor assay

A von Willebrand factor (vWF) assay is a blood test that measures the amount and functionality of a protein called von Willebrand factor, which helps blood clot properly. This test is used to diagnose von Willebrand disease, a common bleeding disorder where blood doesn't clot correctly. By analyzing how much vWF is present and how well it works, doctors can determine if someone has a clotting problem and guide appropriate treatment. The assay involves drawing blood and using laboratory techniques to evaluate the quantity and activity of this vital protein.