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Test & Collection Guide

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PLEASE NOTE: Recent changes have been made to this Test


 Recent changes for von Willebrand Screen

Recent changes for von Willebrand Screen

Date
Field
Changed From
Changed To
8th March 2024
Laboratory

Unassigned

Haematology

Frequency

Weekly

Fortnightly

von Willebrand Screen

Alternate names:
vWD Assay, vWD Screen, vWF
Laboratory:
Haematology
Specimen types:
Plasma
Blood
Container types:
Sodium CitrateSodium Citrate
Collection Instructions:
Transport specimen at Room Temperature to lab

Specimens for vWD screening kept at room temperature, should be centrifuged and tested within 4 hours of time of collection.

If testing is not complete within 4 hours, plasma should be removed from the cells (6 X 1 mL Eppendorf tubes) and frozen at -20 C for up to 2 weeks or -70 C for up to 6 months.

A frost-free freezer should not be used.

Notes:

To comply with HIC ruling tests must be requested individually.

2 x Sodium citrate tubes

Includes INR, APTT, von Willebrand Factor, Factor VIII and vW Antigen.

Frequency:
Fortnightly
Result Turnaround Time:
2 weeks

Pathology Handbook

Test & Collection Guide

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