Casandra
Casandra Test Code AR21989Version 1 (DRAFT)
Performing Lab
von Willebrand Multimeric Panel (Change effective as of 01/20/26: Refer to 3020171 in the January Hotline)
Also known as: VW MUL PAN
Clinical Use
Order TestUse
This test serves as an older ARUP test offering for von Willebrand Multimeric Panel; effective January 20, 2026, clients are directed to use test code 3020171 (von Willebrand Factor Multimeric Panel) instead.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Immunoassay (Immunoturbidimetry)
Biomarkers
Factor VIII, Activity
AnalyteFactor VIII, Activity
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
von Willebrand Factor, Activity (GPIbM)
Analytevon Willebrand Factor, Activity (GPIbM)
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
von Willebrand Factor, Antigen
Analytevon Willebrand Factor, Antigen
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
1-11 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
3 mL platelet‑poor plasma
Minimum Volume
1.5 mL
Container
Lt. blue (sodium citrate) tube
Collection Instructions
Transfer 3 mL platelet‑poor plasma to an ARUP standard transport tube.
Storage Instructions
CRITICAL FROZEN
Causes for Rejection
Serum, EDTA plasma, clotted or hemolyzed specimens
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 hours |
| Refrigerated | Unacceptable |
| Frozen | 3 months |
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