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Test Details
Discipline: Comparative Coagulation
Test Name: von Willebrand factor (vWF:Ag)
Description:  von Willebrand factor concentration, ELISA method 
Test Code: VWF
Fee:  28.50 each 
Sample:  1 mL separated citrate plasma or EDTA plasma 
Collection Container:  plastic or siliconized glass tube in styrofoam box 
Coolant:  Refrigerate or dry ice 
Test Days:  Tu-F 
Lag Time:  same day 
Comments:  Ship Overnight; see Appendix D 
 for additional info on Submission Guidelines, or see Comp Coag web page 

Reference Values & Interpretative Comments
Species Test Reference Value
Canine vWF Test 70 - 180 %
Equine vWF Test 65 - 165 %
Feline vWF Test 70 - 180 %