Test Method


Disease Long Name

T-cell Acute Lymphoblastic Leukemia

Disease Abbreviation


CPT Code

88377x2 (Global)
88374x2 (Tech-only)

Probes / Test Description

[t(9;22)/BCR-ABL1, (9p21)/CDKN2A-CEP9, KMT2A(MLL)-Breakapart]
*IF NEGATIVE and NORMAL karyotype, REFLEX TO: [14q11.2 TRA, 7q34 TRB, 10q24 TLX1, 5q35 TLX3, 10p12 MLLT10, 11q21 PICALM, 1p33 TAL1/STIL]

Specimen Requirements

  • Bone marrow aspirate: 2-3 mL in sodium heparin (green top) preferred, or 1-2 mL in EDTA (purple top)
  • Peripheral blood: 3 mL in sodium heparin (green top) preferred, or 3 mL in EDTA (purple top)
  • Fresh Tissue: Multiple 2-3 mm pieces of tissue in RPMI transport media (optimum RPMI to tissue ratio is 15:1; (multiple vials are acceptable)
  • Formalin-Fixed Paraffin-Embedded Tissue: Minimum 0.2 x 0.2 x 0.2 cm tissue, non-decalcified tissue only

Storage & Transport

Ship specimen the same day whenever possible, with refrigerated (not frozen) cold pack.

Label all tubes with at least two unique patient identifiers. Slides require one patient identifier. Identifiers include name, DOB, specimen ID# or medical record#.

Turnaround time

3 - 5 days

Level of Service