T-Cell Receptor beta-Chain Gene Rearrangements
Test Code: 480985
Performing Lab: LabCorp
CPT Code: 81340 001
Synonym
TCRB Gene Clonality Assay
Specimen Type
Whole blood, bone marrow, formalin-fixed, paraffin-embedded (FFPE) tissue block or slides, fresh or frozen tissue
Specimen Container
Lavender-top (EDTA), yellow-top (ACD) tube, or green-top (heparin) tube, Tan-top (K2-EDTA) tube, and Pink-top (K2-EDTA) tube, FFPE tissue block or slides, tissue in RPMI or frozen
Volume
3 to 5 mL whole blood, 1 - 2 mL bone marrow, five unstained slides at 10uM or formalin-fixed, paraffin-embedded tissue block, tissue in RPMI or frozen.
Minimum Volume
0.5 mL whole blood, 0.5 mL bone marrow, two unstained slides at 10uM
Specimen Handling
Fresh tissue should be placed in RPMI medium or shipped frozen on dry ice. (eg, punch biopsies, fine-needle aspirate) will also be accepted. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Unacceptable Conditions
Frozen whole blood/bone marrow; quantity not sufficient for analysis; tumor tissue; broken or stained slides.
Temperature
Maintain blood, bone marrow or tissue in RPMI at 2(degrees)C - 8(degrees)C, FFPE specimens at room temperature, frozen tissue at -80(degrees)C
Methodology
Polymerase chain reaction (PCR)
| Result Code | Result Name | LOINC |
|---|---|---|
| 480986 | TCRB Gene Clonality Results: | 21751-3 |
| 480987 | Clonal Size: | UNLOINC |
| 480989 | Block Number: | UNLOINC |
| 480993 | Director Review: | 72486-4 |
| 480984 | Methodology: | 49549-9 |
| 480994 | References: | UNLOINC |
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