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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.
Submit With Order
ARUP Consult®
Disease Topics
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, 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
0030285von Willebrand Factor Antigen0-6 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 NameLOINC
0030250von Willebrand Factor, Activity (RCF)6014-5
0030285von Willebrand Factor, Antigen27816-8
* 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
  • Ristocetin Cofactor, Plasma
  • von Willebrand Ag
  • von Willebrand Factor Activity
  • von Willebrand Factor Modified Panel
  • vwf Modified Panel