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Lab Test Dictionary

T-Cell Clonality Panel (TCRB, TCRG), PCR (91445)


Polymerase Chain Reaction; Fragment Analysis


T-Cell Receptor (TCR) Gene Rearrangement, Qualitative, Cell-based; T Cell Gamma; T Cell Beta

Specimen Type

Whole Blood or Bone Marrow

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

5 Days

Collection Information

Specimen Required

3-5 mL Whole Blood or 0.5-1 mL Bone Marrow

Container Type

Lavender (EDTA)

Collection Instructions

Bone marrow collected in a sodium heparin (green-top) tube is also acceptable. Formalin-fixed, paraffin embedded tissue, Tissue in a sterile transport tube or Fine needle aspirate (FNA) are also acceptable.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp=7 Days (Indefinite for Formalin fixed paraffin embedded tissue); Refrigerated=7 Days (Indefinite for Formalin fixed paraffin embedded tissue); Frozen=Unacceptable (1 Year for Tissue or Fine Needle Aspirate (FNA)

Test Volume Required

5 mL Whole Blood or 1 mL Bone Marrow

Minimum Test Volume

3 mL Whole Blood or 0.5 mL Bone Marrow

Processing Instructions

Indicate source in comments, on specimen and on batch sheet.

Included Tests

Pathologist Interpretation.


CSF can be attempted if approved by the Medical Director at Quest prior to submitting specimen. Insurance authorization required prior to draw for Outpatients. Ok to send on Inpatients.

CPT Codes

81342, 81340, 84999