Von Willebrand Factor activity assay

CG0115

Synonym(s):
Specimen Container
Sodium Citrate Tube
Specimen Requirement
Citrated Whole Blood
Adult: 3 mL
Paediatric: 1 mL
Specimen Storage/Transport
Requires urgent specimen transportation to SGH laboratory.
Orderable as Urgent? No
Turn Around Time
1 week
Reference Value(s)
50 - 187%
Testing Laboratory Location SGH
Laboratory Haematology
Contact Number 6394 1352
Day and Time Performed
Weekly
Orderable on CPOE? Yes
Downtime Form

63170-Form-1080 Haematology Laboratory Downtime Form

Additional Information

Fill blood up to the black marking on tube and mix well. Overfilling of blood may cause clotting. Under filling cause dilution of clotting factors. Test for Von-Willebrand factor antigen is recommended in conjunction with the above test.

Change History Notes

  • 08 Feb 2023 12:00 AM

    Updated Laboratory.

  • 06 Nov 2021 12:00 AM

    ​Updated Test Name, Specimen Requirement, Reference Value(s).

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Last Updated - 05 Apr 2025