VWMUT – “Von Willebrand Factor Multimer”

Update to specimen requirements, rejection criteria, stability, and methodology

Patient Preparation: Collect using coagulation test collection methods.

Specimen Preparation: Send 1.0 mL platelet-poor plasma in a screw capped plastic vial. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Rejection Criteria: Hemolyzed specimens, clotted specimens, serum, EDTA plasma

Stability:

Room temperature: 4 hours
Refrigerated: Unacceptable
Frozen: 3 months

Methodology: Qualitative Electrophoresis