| 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.
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| Methodology: |
Microlatex Particle-Mediated Immunoassay
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| Performed: |
Mon-Sat
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| Reported: |
1-3 days
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| Specimen Required: |
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.
Remarks:
Unacceptable Conditions: Serum. Non-frozen or hemolyzed specimens.
Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: Unacceptable; Frozen at -20°C: 3 months; Frozen at -70°C: 6 months
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