von Willebrand Modified Panel
0030284
 
Ordering Recommendation
Order in conjunction with Factor VIII Activity (0030095) for the workup of suspected von Willebrand disease.
Mnemonic
VW PANEL 2
Methodology
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 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. Hemolyzed or non-frozen 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
0030285von Willebrand Factor Antigen 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%
0030250von Willebrand Factor Activity (Ristocetin Cofactor) 0-​6 years: 51-​215%
7-​9 years: 52-​176%
10-​11 years: 60-​195%
12-​13 years: 50-​184%
14-​15 years: 50-​203 %
16-​17 years: 49-​204%
18 years and older: 51-​215%
Interpretive Data
Note
CPT Code(s)
85246; 85245
Components
Component Test Code*Component Chart Name
0030250von Willebrand Factor, Activity (RCF)
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, contact interface support at interface.support@aruplab.com.
Cross References
  • Ristocetin Cofactor, Plasma
  • Von Willebrand Ag
  • von Willebrand Factor Activity
  • von Willebrand Factor Modified Panel
  • vwf Modified Panel