Test #
226
Test CPT Codes
81342
T-Cell Receptor Gene Rearrangement, γ
Test Type
Hematopathology
Test Technology
Polymerase chain reaction (PCR)
Test Disease
T cell Skin Lymphomas
Clinical Utility
Diagnostic
Test Specimen
Test Specimen:
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Whole blood, bone marrow, formalin-fixed, paraffin-embedded (FFPE) tissue block or slides, fresh or frozen tissue
Specimen Requirements:
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3 to 5 mL whole blood, 1 mL bone marrow in lavender-top (EDTA) tube; Yellow-top (ACD) tube and green-top (heparin) tubes are accepted but not preferred.
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Five unstained slides at 10 μM or formalin-fixed, paraffin-embedded tissue block
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Tissue in RPMI or frozen (A minimum of 2 x 2 x 2 mm)
Transport Conditions:
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Peripheral blood/Bone marrow: Refrigerated
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FFPE tissue blocks or unstained slides: Room Temperature
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Tissue in RPMI or frozen
PB TAT
5-7 days
BM TAT
Tissue TAT
FFPE TAT
Test Storage
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Maintain blood, bone marrow or tissue in RPMI at 2°C to 8°C
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FFPE specimens at room temperature
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Tissue at -80°C