Von Willebrand Disease (VWD) is the most common inherited bleeding disorder. Clinically, it is often characterized by muco-cutaneous hemorrhages. The Group test includes Factor VIII Assay, vWF Activity and Antigen.
Send whole blood sample(s) at room temperature as soon as possible.
If specimens cannot be shipped immediately, centrifuge and separate plasma within 1 hour of collection, send frozen plasma on dry ice
8 hrs at Room Temperature, 12 months at -70ºC or below.
Test may be requested at any time. Samples are aliquotted and frozen. The assay is run in batches.
Special arrangements made with Lab
1-2 weeks
See individual ranges and values for Factor VIII Assay, vWF Activity and Antigen. In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.