Von Willebrand Screen
REQUESTING AND COLLECTING

Ordering:
Von Willebrand screen consists of a group of related tests - factor VIII,

vWF antigen and vWF Collagen Binding. Ristocetin cofactor is also

performed if other tests are abnormal. Factor VIII and VWF Antigen

may also be ordered separately (not part of VW screen).

Collection:
3 citrate tubes required. Tube MUST be full. Place on ice if unable to

deliver to laboratory within 2 hours of collection.
Container(s):
Citrate tube (2.7 mL blue-top) - required

GENERAL INFORMATION

Reference Intervals:
See individual report or contact testing laboratory for information.

Laboratory:
Referred to: ICPMR Haematology (9845-6210)

Patient Results:
(02) 8382-9100
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INSTRUCTIONS FOR REFERRING LABORATORIES
Handling & Transport:

Centrifuge as for coagulation studies. Make 4 aliquots prior to freezing

sample. Non-Sydpath referring laboratories should send samples

directly to ICPMR.
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INSTRUCTIONS FOR HANDLING AT SYDPATH
SydPath Handling:
SPRO: Processing by laboratory only. Send all tubes immediately to

coag lab.

Data Entry Code:
VW

SydPath Division:
Haematology

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Date/Time published: 30/03/2020 17:35:51
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