VON WILLEBRAND FACTOR MULTIMERS

Specimen Required
Draw blood in a light blue sodium citrate tube. See appendices for coagulation test collection instructions. Send 1.0 mL frozen plasma (0.5 mL minimum) frozen in a screw-capped plastic vial. CRITICAL FROZEN.

Rejection Criteria
Hemolyzed specimens, clotted specimens, serum, non-frozen specimens

Methodology
Electrophoresis/Clotting/Microlatex Particle-Mediated Immunoassay/Platelet Agglutination

Stability
Room Temperature: 4 hours; Refrigerated: Unacceptable; Frozen (-20°C): 14 days; Frozen (-70°C): 6 months

Reference Range
By report

Performed
Monday-Friday

Turnaround Time5-14 days
Test CodeVWMUT
CPT-4 Code (s)
85247
LOINC Codes
Von Willebrand Factor Multimers   32217-2  

Warde
Medical
Laboratory