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HelpCatalog ID VWFM von Willebrand Factor Multimers
Additional Codes
CPOE: Ref von Willebrand Factor Multimers
DOE: Ref VWFMul
Specimen
Sodium Citrate Light Blue top tube, collect full tube
Plasma, 1.0 mL (0.5 mL minimum), frozen
Rejection Criteria
Serum, other anticoagulants, tube not filled to fill line, clotted specimen, hemolyzed specimen, specimens at room temperature >4 hours, refrigerated specimen
Interpretative Information
Order to assist with diagnosis and subclassification of inherited or acquired von Willebrand disease.
***Patients with normal vWF Ag and vWF Activity testing will have vWF Multimer testing cancelled as not medically necessary.***
Performing Lab
ARUP Laboratories
Turn-Around-Time
4-11 days
Reference Values
See electrophoresis result report