Casandra
Casandra Test Code LC98586Version 1 (DRAFT)
Performing Lab
Red Blood Cell (RBC) Antigen Typing: Lea/Leb
Clinical Use
Order TestUse
Determine the Lewis phenotype
Special Instructions
Not provided.
Limitations
The presence of potent cold agglutinins can interfere with test interpretation. Additionally, a positive direct antiglobulin test and, in some cases, bacteremia may also affect the test outcome, leading to potential inaccuracies in phenotyping.
Test Details
Methodology
Other
Biomarkers
Lea
OtherLea
Other • Categorical (e.g., Positive / Negative / Indeterminate)
Leb
OtherLeb
Other • Categorical (e.g., Positive / Negative / Indeterminate)
LOINC Codes
Order Codes
- 93914-0 - Bld Grp Ag Pnl RBC
Result Codes
- 1115-5 - Le sup(a) Ag RBC Ql
- 1121-3 - Le sup(b) Ag RBC Ql
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Whole Blood
Volume
1 mL
Minimum Volume
0.5 mL
Container
Lavender-top (EDTA) tube
Storage Instructions
Specimens should be tested as soon as possible or within 72 hours of collection. Samples that cannot be tested immediately should be stored at 2°C to 8°C. Do not freeze red cells.
Causes for Rejection
Gross hemolysis; bacterial or other contamination
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