ARUP's Laboratory Test Directory

von Willebrand Factor Antigen : 0030285

Mnemonic: VWF/AG

Methodology: Microlatex Particle-Mediated Immunoassay
Performed: Mon-Sat
Reported: 1-3 days
Specimen Required: Collect: Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.

Specimen Preparation: Transfer 2 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.

Remarks:

Unacceptable Conditions: Serum. Non-frozen or hemolyzed specimens.

Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 8 hours; Frozen: 2 weeks
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%
CPT Code(s): 85246
Cross References: VWF Ag
 
 

 

 

 
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