T-Cell Gene Rearrangement

Alias/Synonym: Tcell - Gamma

CPT Code: 81342

Specimen Type, Preferred:
Bone marrow aspirate
Formalin fixed paraffin embedded tissue
Specimen Type, Alternate:
Peripheral blood
Sample Quantity, Preferred:
2mL aspirate
10 mL peripheral blood
1 Block
Sample Quantity, Minimum:
0.5mL aspirate
5mL peripheral blood
5 unstained slides
Transport Container:
Lavender top (EDTA) tube
Green top (Sodium Heparin) tube
Paraffin block
Unstained slides
Transport Temperature:
Refrigerated for tubes
Room temperature for blocks
Collection Instructions:
If bone marrow is dry tap, submit 5-10mL peripheral blood.
Specimen Stability:
Room temperature: 2 day(s)
Refrigerated: 3 day(s)
Rejection Criteria:
Room temperature or clotted for tubes
Clinical Significance:
Detects monoclonal T-cell receptor gamma gene rearrangements of variable and joining regions for lymphoproliferative disorders (LPDs).
Turnaround Time:
7 - 10 day(s)
Reference Ranges:
Cutoff value % based on assay sensitivity