Test Directory

von Willebrand Disease Profile, Plasma

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Updated Test Information:

Test Description
von Willebrand Disease Profile, Plasma
Synonym(s)
von Willebrand Disease Prof
Test ID
AVWPR
General Information
Useful for:
Detection of deficiency or abnormality of von Willebrand factor (VWF) and related deficiency of factor VIII coagulant activity
Subtyping von Willebrand disease (VWD) as type 1 (most common), type 2 variants (less common), or type 3 (rare)
This test is not useful for detection of hemophilia carriers
Specimen Type
Plasma
Specimen Requirements
Light Blue
Stability
Frozen 14 days
Unacceptable Specimen Conditions
Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Methodology
F8A, IBETH, F8IS: Optical Clot-Based
VWAG, VWACT: Latex Immunoassay (LIA)
RIST: Ristocetin Induced Agglutination of Washed Normal Platelets
VWFMP: Agaross Gel Electrophoresis/Infrared Dye-Labeled Antibody Detection
Estimated TAT
5-12 days
Testing Schedule
Monday-Saturday
Test Includes
AVWPI von Willebrand Disease Tech Interp
F8A Coag Factor VIII Activity
VWAG von Willebrand Factor Ag
VWACT von Willebrand Factor Activity
CPT Code(s)
85240
85246
85390
85397
Minimum Sample Volume
2 plastic vials each containing 1 mL
Reference Range
IBETH Bethesda Units
F8IS Coag Factor VIII Assay Inhib Scrn
AVWPQ von Willebrand Disease Interp
VWFMP von Willebrand Factor Multimer
RIST Ristocetin Cofactor
Performing Lab
Mayo
LOINC Code(s)
3209-4, 27816-8, 48595-3, 68324-3