Functional assay measuring vWF ability to agglutinate platelets in the presence of ristocetin. Disproportionately low compared to vWF:Ag in type 2 vWD variants.
| Sex | Age | Range | Notes |
|---|---|---|---|
| All | ≥ 18 yrs | 50 – 200 | Adult |
⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.