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Labcorp Oklahoma, Inc.
Test Directory


Index:

Von Willebrand Panel

Order Name VONWIL PNL
Test Number: 3658900
Revision Date 05/27/2026
Test Name Methodology LOINC Code
Factor 8 (VIII) Assay
Clot Detection 3209-4 
Von Willebrand Factor Activity (Ristocetin Cofactor)
Clot Detection 6014-5 
Von Willebrand Factor Antigen
Immunoturbidimetry 27816-8 
Von Willebrand Factor Multimer Assay
See Test Notes  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred See Instructions Plasma Sodium Citrate 3.2% (Blue Top) Frozen
Instructions Use Double spin procedure to provide Four to Five 2mL (1mL) frozen aliquots plasma from 3.2% Sodium Citrate tubes (Minimum collection is Five 1.5mL (0.5) aliquots). Do Not pool aliquots.
GENERAL INFORMATION
Testing Schedule Thursday - Day Shift 
Expected TAT Assay Dependant  
CPT Code(s) 85240, 85245x2, 85246x2, 85247
Lab Section Reference Lab