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Laboratory: Hematology
Test Name:
VON WILLEBRAND PROFILE/DDAVP TRIAL- HSC
Test Code: VONW
Clinical Information:
Clinical Hematology consult required prior to collection or initiate hemostasis (Hematopathologist) consult F140-80-48A.


This profile includes closure times, Von Villebrand antigen/activity and Factor VIII.




 

Collection Devices:
Specimen Required:


Plasma: 6.0 mL
Pediatric Plasma: 3.0 mL

Na Citrate Tubes:  Centrifuge according to lab's current process for coagulation sample.  Remove plasma with transfer pipette.  Place in 6 plastic aliquot tubes and re-centrifuge, capped.  Aliquot into 6 plastic tubes, cap, and indicate "spun x 2" on labels.  Freeze immediately at -20°C.  Transport frozen on ice.
 
Referral:

Test performed at:  HSC Haemostasis Laboratory Ph: 204-787-2105.
Requisition:
Reference Values:
See Report.
Availability:
Weekdays
See Also:
More Information:
Test performed Monday-Friday 0745-1600, however, referred-in samples in Na Citrates tubes may be sent  frozen to the HSC lab at any time, attention: Haemostasis Bench.

Note: EDTA Tubes stable for 24 hours at room temperature, or 72 hours at 2-8°C. Process CBC offline at collection site and send report.  EDTA minimum is 1 mL or 250uL if an EDTA microtainer is collected.


Note: Samples and original requisition are to be forwarded to the Hemostasis lab regardless of number of tubes drawn or volumes.


Note: Closure times only stable for 4 hours at room temperature. Recommend sample collection at HSC Hemostasis (ph: 204-787-2105) if closure times required. 


Rural sites: Spin & freeze citrate plasma for remaining tests.