Days Set Up
Friday
Analytic Time

4 hours

MiChart Code
Von Willebrand Disease Panel
Soft Order Code
VWD

Test Updated:

Synonyms

VON WILLEBRAND'S WORKUP
VWF AGN
F8
VWF
VONWILLEBRAND'S FACTOR ANTIGEN
FACTOR VIII ASSAY
RISTOCETIN COFACTOR ASSAY
vonWillebrand's Workup
VWDX

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology
 
Test Usage
 
Reference Range

Interpretive report provided

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic vial, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.

Please provide clinical history (brief description of the reason for testing, e.g., history of easy bruising and menorrhagia, family history of von Willebrand disease) and a listing of current and recent medications, including oral contraceptives, anticoagulants, and factor replacement therapy/DDAVP.

Blue Top Tube
Normal Volume
3 full 2.7 mL tubes or 3mL plasma (three 1mL aliquots)
Minimum Volume
3 full 1.8 mL tubes or 3mL plasma (three 1mL aliquots)

Billing Information

CPT Code
85240, 85245, 85246, 85730
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.