Von Willebrand factor multimers

Alphabetical Test listing

Von Willebrand factor multimers-14206

  
Von Willebrand factor multimers
  
14206
  
LAB14206
  
VWF
  
vWF Multimers
  

Aid in the determination of von Willebrand factor (vWF) deficiency subtype 6-9

  
Sodium citrate (Na cit) plasma
  
  
2.0 mL
  
1.0 mL
  
  • Do not draw from an arm with a heparin lock or heparinized catheter.
  • Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood to anticoagulant ratio.
  • The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples.
  • When non-citrate tubes are collected for other tests, collect sterile and non-additive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternate anticoagulant should be collected after the blue-top tube.
  • Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes
  • Immediatley following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting
  
  1. Process Platelet Poor Plasma (P.P.P) 
  2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as Na cit plasma
  3. Freeze immediately

 

 

  

Frozen (strict) - 22 months at -70°

Stable through 5 freeze/thaw cycles

  
LabCorp Esoterix (500148): R-NX
  
Mo, Tu, Sa
  
7 - 11 days
  

Western Blot (WB)

  

An interpretive report will be included

  
85247
  
Result 6013-7
  
10/09/2019
  
02/17/2021