Ordering Recommendation
Recommended panel for the initial workup of suspected von Willebrand disease.
Mnemonic
VW PANEL
Methodology
Electromagnetic Mechanical Clot Detection/Platelet Agglutination/Microlatex Particle-Mediated Immunoassay
Performed
Mon-Sat
Reported
1-3 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.
Specimen Preparation
Transfer 3 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions
Serum, EDTA plasma, clotted or hemolyzed specimens.
Remarks
Stability
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen at -20 °C: 3 months; Frozen at -70°C: 6 months
Reference Interval
Test Number |
Components |
Reference Interval |
||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Factor VIII, Activity |
|
|||||||||||||||||
von Willebrand Factor, Activity (RCF) |
|
|||||||||||||||||
von Willebrand Factor, Antigen |
|
Interpretive Data
Compliance Category
FDA
Note
Hotline History
N/A
CPT Codes
85240; 85246; 85245
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0030095 | Factor VIII, Activity | 3209-4 |
0030250 | von Willebrand Factor, Activity (RCF) | 6014-5 |
0030285 | von Willebrand Factor, Antigen | 27816-8 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- F8 Activity
- Factor VIII activity
- Factor VIII Studies
- von Willebrand Factor Panel
- von Willebrand Factor, Activity; RCF
- von Willebrand Factor, Antgien
- vWF Ag
- vWF Panel
von Willebrand Panel