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von Willebrand factor
2 articles in this field-note collection.
VWF activity test: low results, types and the 0.7 ratio
VWF activity shows how well von Willebrand factor grips platelets: the normal range, the activity-to-antigen ratio, the four test types and what low means.
von Willebrand factor antigen: normal range, low results
VWF antigen shows how much von Willebrand factor is in your blood: the normal range, the 2021 von Willebrand disease cutoffs, and why levels swing.