Von Willibrand Disease Workup
A von Willebrand disease workup evaluates bleeding tendencies by assessing von Willebrand factor (VWF) levels and function. It includes tests like VWF antigen, ristocetin cofactor activity, and factor VIII levels. Genetic testing may be needed for specific subtypes of the disease. This workup helps diagnose and manage bleeding risks effectively.
Details
- PT with INR
- APTT
- Von willibrand Antigen (VWF:Ag)
- Ristocetin Cofactor Assay (Ricof )
- Factor VIII assay
- Ricof/VWF ; Ag Ratio
Samples :
2 Citrate Tube (Blue Top)
Storage & Transportation :
Up to 3 hrs. – Room temp
> 3 hrs. – Citrate plasma in Dry ice
Caution :
Do not use Coolant or Ice pack for transport


