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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
von Willebrand Factor Antigen
Test CodeF8REL
Alias/See Also
Factor VIII related Ag
Preferred Specimen
1 mL platelet poor sodium citrate plasma
Minimum Volume
0.5 mL
Instructions
Submission of platelet poor plasma is critical to accurate results. Contact laboratory for further information.
Transport Container
Plastic vial
Transport Temperature
Frozen
Specimen Stability
Frozen 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, gross lipemia
Report Available
2-4 days
Reference Range
55-200% Note: Individuals of blood group "O" may have lower plasma von Willebrand factor (VWF) antigen than those of other ABO blood groups, such that apparently normal individuals of blood group "O" may have plasma VWF antigen as low as 40% to 50%, whereas the lower limit of the reference range for individuals of other blood groups may be 60% to 70%.
