Pathology Handbook

Von Willebrand studies

Alternative Names:

von Willebrand factor
vWF Ag
von Willebrand factor studies
von Willebrand factor activity
Ristocetin activity
collagen binding assay

Laboratory:

Haematology

Test Code:

VWR, F8

Medicare rebatable:

Yes

Specimen Types:

Plasma

Container Types:

Sodium Citrate x 2

Adults Volume or Mass:

2.7 mL

Minimum/Paediatric Volume or Mass:

1.7 mL

Collection & Request Instructions:

Retrospective testing within 6 hours

2 CITRATE REQUIRED. Usually ordered as part of von Willebrand factor (vWF) studies, which include von Willebrand factor antigen (vWF Ag), FVIII, collagen binding factor and Ristocetin (RicoF).

If no other tests in vWF studies are ordered, contact request doctor to confirm that no other tests are required.

Transport Instructions:

Room Temperature

Assay Frequency:

Weekly

USEFUL LINKS

Frozen Section Booking Form

Printable Pathology Request Form

Order of Draw - Blood Samples