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
Change effective as of 01/20/26: Refer to 3020171 in the January Hotline.
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 |