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Pathology and Laboratory Medicine
Test Catalogue

​bcr-abl t(9;22) p210 fusion RT-PCR (bcr-abl)

Human Molecular Genetics

​Ordering Recommendation

  • ​ ​Due to the instability of RNA transcripts, specimens are recommended to be collected Mon-Thurs
  • This is an RNA based test and can be repeated for patient management
  • If JAK-2 and bcr-abl are both requested, two tubes of peripheral blood are sufficient for both tests
  • The bcr-abl rearrangement may be detected by RT-PCR, even when no Philadelphia chromosome is observed by cytogenetic analysis

​ ​Specimen Requirements

  • ​Bone marrow aspirate
  • Whole blood
​Collection Procedure
  • ​Invert several times to mix
  • Specimens should be transported to Royal University Hospital, Human Molecular Genetics without unnecessary delay
​Required Volume

Peripheral Blood

  • Optimal Volume: 8 ml  (2x Lavender tubes)
  • Minimum Volume: 4 ml

Bone Marrow Aspirate

  • Optimal Volume: 3 ml
  • Minimum Volume: 1 ml
  • ​RNA molecules are not stable and degrade over time. Timely transport is important
  • Ship specimens at ambient temperature
  • Specimens may be stored at 2 - 8°C before being immediately processed
Grounds for Rejection​

Testing Information​ ​

  • ​Recommended collection Monday -Thursday
  • STAT testing can be requested, but testing only available Monday to Friday
Testing Site​Royal University Hospital, Human Molecular Genetics Laboratory
Results Reporting​
  • ​Results are generally available within 7 working days
  • STAT results are available within 3 working days
  • ​RNA is reverse-transcribed into cDNA and subjected to PCR amplification
  • This analysis provides qualitative information only
​Clinical Interpretation
  • ​Presence or absence of the bcr-abl t(9;22) p210 fusion transcript
​Specimen Retention
  • ​Frozen cell pellet (if sufficient sample) retained for 2 years
  • Unprocessed samples can not be retained for future testing
Alternate Test Names​
  • Chromosomes 9 and 22 translocation fusion product
  • t(9;22)
  • CML (Chronic Myelogenous Leukemia)
  • Philadelphia chromosome transcript
​Additional Comments
  • ​This test does not detect the alternate t(9;22) p190 fusion transcript occurring from a break in the minor breakpoint cluster region
  • This test is not suitable for Minimal Residual Disease testing
​SHR LIS Test Code
  • ​Order as MISTC (For Laboratory Use Only)

​If you choose to print this information, it is valid only on date of print.

Laboratory Controlled Document LSM-334 v3

Last Modified: Monday, September 9, 2019 |
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