Casandra
Casandra Test Code AR50226Version 1 (DRAFT)
Performing Lab
von Willebrand Modified Panel
Also known as: VW PANEL 2
Clinical Use
Order TestUse
This panel is used in the diagnostic workup of suspected von Willebrand disease; it measures both von Willebrand factor antigen and activity to aid in assessment of VWD, and it is recommended to be ordered alongside Factor VIII activity testing for a comprehensive evaluation.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Immunoassay (Multiplex Protein Panel)
Biomarkers
2 components
von Willebrand Factor, Activity (RCF) • Multiplex Protein Panelvon Willebrand Factor, Antigen • Multiplex Protein Panel
LOINC Codes
Order Codes
- 27816-8 - vWF Ag Act/Nor PPP IA
- 6014-5 - vWF Act/Nor PPP Aggr Rst act
Result Codes
- 6014-5 - vWF Act/Nor PPP Aggr Rst act
- 27816-8 - vWF Ag Act/Nor PPP IA
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
1.5 mL platelet‑poor plasma (Minimum: 1 mL)
Minimum Volume
1 mL
Container
Lt. blue (sodium citrate) tube
Collection Instructions
Collect in sodium citrate tube; transfer platelet‑poor plasma to 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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