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Test Code
VWFS
Test Name
von Willebrand Sequencing
CPT Codes
81408
Expected Turnaround Time
10 - 15 days
Clinical Utility
Molecular test to confirm a phenotypic diagnosis of von Willebrand disease (VWD) types 1, 2A, 2B, 2M, 2N, or 3. May also be used as carrier screening for autosomal recessive forms of VWD.
Specimen and Container Info

Specimen Type: Whole Blood

  

Collection Container: Lavender Top (EDTA)

Alternate Collection Container: Pale Yellow Top (ACD Solution A or B)

Desired Specimen Volume: 3 mL
Collection Instructions
  1. Collect a lavender top (EDTA) tube via venipuncture.
Processing and Submission Instructions
  1. Transport 3 mL of whole blood in the original collection container.
  2. Submit a Von Willebrand (VWD) Testing Patient History Form with sample for appropriate result interpretation.
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

72 hours

Refrigerated

14 days
Causes for Rejection
  • Gross hemolysis
Methodology
Massively Parallel Sequencing
Reference Intervals

See patient report.
Limitations

Exons 26 and 34 are not covered by sequencing, and deletion/duplication analysis is not available for this gene.
Reference Lab
ARUP Laboratories
Testing Schedule
Varies
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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