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Test Code Billings Clinic: 8856 T-Cell Clonality Assessment (Beta), PCR

Performing Laboratory

Genoptix Laboratory

Useful For

PCR allows discrimination of individual members of the sufficiently diverse TCR-Beta gene family.  By using PCR amplification of the Beta chain of the T-cell receptor (TCR-Beta) a dominant clone can be identified in over 90% of T-cell malignancies.


Polymerase Chain Reaction (PCR)

Specimen Requirements

  • Do not centrifuge
  • Send sample refrigerated. Use a refrigerated cold pack for transport.
  • Make sure cold pack is not in direct contact with the specimen.

Submit 1 or both of the following specimens:


Bone Marrow

Send 2 - 3 mL of bone marrow aspirate in an EDTA tube (purple top).


Whole Blood

Send 2 - 3 mL of peripheral blood in an EDTA tube (purple top).

Reference Values

An interpretive report will be provided.

Day(s) Test Set Up

Monday - Friday, by 3 pm

Test Classification and CPT Coding

81340 – TRB@, gene rearrangement analysis to detect abnormal clonal population(s); using amplification methodology



LOINC Code Information

Reporting Name LOINC Code
T-Cell Clonality Assessment (Beta) In process