Stanford Hospital & Clinics and Lucile Packard Children’s Hospital
Test Name : von Willebrand Multimers Screen Order Code : 12322R
Synonyms: von Willebrand multimer, von Willebrand multimers, von Willebrand Multimeric, von Willebrand Multimeric Analysis, von Willebrand multimer screen, vWFM
Specimen Type: Platelet-Poor Plasma
Container Type: Blue-top tube (Sodium citrate)
Required Volume: One full tube (4.5 mL blood)
Minimum Volume (Pediatric): 2.7 mL blood or 1.8 mL blood depending on size of tube used
Methodology: Protein Gel Electrophoresis
Standard Run Times: Mon-Fri batched
Turnaround Time: 72 hours to one week
Special Handling: Within 1 hour of collection, centrifuge tube as required to obtain platelet poor plasma. Aliquot platelet poor plasma into plastic tubes (2 aliquots preferred). Freeze immediately. Transport Frozen.
CPT Codes: 85247
SHC EPIC Code: LAB12322R
Causes For Rejection: Clotted, gross hemolysis, improperly filled tube, received thawed.
Department: Special Coagulation