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HelpCatalog ID vWF Ag von Willebrand Antigen
CPOE Test Name
von Willebrand Related Antigen Factor
Epic EAP Test Code
LAB757
Synonyms
vWF Ag; von Willebrand factor antigen
Specimen Type
Plasma
Specimen Requirements
Light Blue Top (Sodium Citrate) tube; 2.7 mL blood
Causes for Rejection
Tube improperly filled, clotted or hemolysis; improper labeling; delay in transport
Turn Around Time
Batch testing
CPT / HCPCS Code
85244
Performing Lab
Core Laboratory BI 2023 721-2120
Storage and Transport
Room temperature. Transport to the lab immediately.
Special Instructions
Always allow blue top/citrate tubes to fill completely.
Reference Range
50 – 150%
Test Consists
% of von Willebrand Factor Antigen
CPT/HCPCS Code
85244