von Willebrand Factor Antigen
0030285
Ordering Recommendation
Order in conjunction with von Willebrand Factor Activity (Ristocetin Cofactor) (0030250) and Factor VIII Activity (0030095) as part of initial workup of suspected von Willebrand disease.
Mnemonic
VWF/AG
Methodology
Microlatex Particle-Mediated Immunoassay
Performed
Mon-Sat
Reported
1-3 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
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 1.5 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. Non-frozen or hemolyzed specimens.  
Remarks
 
Stability
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen at -20°C: 3 months; Frozen at -70°C: 6 months   
Reference Interval
0-6 years: 52-214%
7-9 years: 62-180%
10-11 years: 63-189%
12-13 years: 60-189%
14-15 years: 57-199%
16-17 years: 50-205%
18 years and older: 52-214%  
Interpretive Data
 
Note
 
CPT Code(s)
85246
Components
Component Test Code*Component Chart Name
0030285von Willebrand Factor, Antigen
* 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
  • Von Willebrand Ag
  • VWF Ag