von Willebrand Disease Profile

Test Code

135583

CPT Codes
85240, 85245, 85246, 85247

Includes

Willibrand Factor Antigen
Ristocetin Cofactor
von Willebrand Factor Multimer Analysis*
Factor VIII Activity, Clotting

Preferred Specimen

1 mL platelet-poor plasma collected in each of four separate 3.2% sodium citrate (light blue-top) tubes

Minimum Volume

1 mL (x4)

Instructions

Please submit a separate, frozen vial for each special coagulation assay ordered.
Collect blood before coagulation factor replacement therapy is begun. Transport 4 separate frozen vials in the same shipping container.

General Drawing Instructions: Refer to Quest Diagnostics Nichols Institute Directory of Services under Specimen Collection section, Coagulation Testing, for further information on specimen processing.

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days

Methodology
Aggregation • Clotting Assay • Electrophoresis • Immunoturbidimetric

FDA Status
*This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Set up: Mon-Fri; Report available: 5 days

Reference Range

See individual tests

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.