Casandra
Casandra Test Code QD82807Version 1 (DRAFT)
Performing Lab
Rituxan Sensitivity (CD20)
Also known as: Rituximab, CD20, CD20 (Rituxan Sens)
Clinical Use
Order TestUse
The assay measures CD20 antigen expression on the surface of B‑cell non‑Hodgkin’s lymphomas (>90% express CD20) to assess binding potential of Rituxan® and its therapeutic effect.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Cell-based / Cytometry (Flow Cytometry)
Biomarkers
4 targets
AppearanceCells CD20/100 cellsSpecimen SourceViable cells/100 cells
LOINC Codes
Order Codes
- 31208-2
Result Codes
- 33511-7
- 33194-2
- 20595-5
Result Turnaround Time
2-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Whole Blood
Volume
5 mL
Minimum Volume
1 mL
Collection Instructions
Collect whole blood in sodium heparin (green‑top) tube or EDTA (lavender‑top) tube or ACD solution B (yellow‑top) tube
Causes for Rejection
Clotted or fixed sample
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | Unacceptable |
| Frozen | Unacceptable |