Alternative Name
T-Cell Beta Gene Rearrangement
Methodology
Molecular
Test Description

This test provides qualitative detection of monoclonal T-cell receptor (TCR) beta gene rearrangements by PCR and fragment analysis according to BIOMED-2 consensus primer design. This test may be ordered concurrently with or after negative results in our T-Cell Receptor Gamma Gene Rearrangement assay for gamma gene rearrangements to improve TCR rearrangement detection by ~5% in T-cell leukemias/lymphomas. 

Clinical Significance

T-cell receptor (TCR) gene rearrangement analysis is commonly used for determining clonality in the diagnostic evaluation of T-cell lymphomas and leukemias. TCR gamma gene (tested separately) and beta gene rearrangement analysis (as provided in this test) together will detect most clonal TCR rearrangements in patients with T-cell lymphomas/leukemias. Results should be interpreted in clinical context for diagnosis of T-cell lymphoproliferative disorders.

Specimen Requirements
  • Peripheral blood: 5 mL in EDTA tube.
  • Bone marrow: 2 mL in EDTA tube.
  • FFPE tissue: Paraffin block is preferred. Alternatively, send 1 H&E slide plus 5-10 unstained slides cut at 5 or more microns. Please use positively-charged slides and 10% NBF fixative. Do not use zinc fixatives.
  • Fresh tissue: Two pieces minimum, 0.2 cm^3 in RPMI.
Storage and Transportation

Refrigerate fresh tissue until shipping. For all specimens, use cold pack for transport. Make sure cold pack is not in direct contact with specimen.

CPT Code(s)*
81340x1
Turnaround Time

7 days

Level of Service
Global

*The CPT codes provided with our test descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.