Laboratory Test Information Guide
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Committed to Quality

The HRLMP is committed to providing high quality laboratory results for our clients.
As one of the largest integrated laboratory medicine programs in Canada we strive to produce the right results the first time on every sample we receive.
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Test Name:
Genetics - Suspected Myeloproliferative Neoplasm (MPN)
Alternate Name: Genotyping, acquired mutation, tyrosine kinase, MPD, Cytogenetics, chromosome analysis, G-banding, MPD, karyotype, JAK2 V617F, MPL 515, CALR, calreticulin, myeloproliferative neoplasm, MPN, MPD, genotyping, acquired mutation, tyrosine kinase
Requisition Form: Download Requisition Form
Specimen Type: Molecular testing: minimum 2.0 mL Bone Marrow in EDTA, or 4mL Peripheral Blood in EDTA.

Cytogenetics: minimum 2.0mL Bone Marrow (preferred) in Green Sodium Heparin Tube

Storage/ Transport: Ship at room temperature Overnight fridge storage as required.
Turnaround Time:
Routine:
     Molecular: 10 days
Cytogenetics: 4 weeks

Urgent:
     Cytogenetics: 2 weeks

Additional Information: For blood and bone marrow EDTA samples, the following molecular testing will be performed:
- RNA-testing for the following fusion by RT-PCR: BCR::ABL1 (b2a2, b3a2, e1a2, e1a3, e19a2 forms)
- PCR-based assay for the detection of the acquired, somatic tyrosine kinase JAK2 gene mutation V617F (Val617Phe).
- Fragment analysis/Sanger sequencing for detection of insertions and deletions in CALR gene (exon 9 only)

MPL and JAK2 Exon 12 are only performed if specifically requested (bone marrow only).

If requested, karyotype and/or FISH (PDGFRA, PDGFRB, FGFR1) will be performed.

Note: that JAK2 V617F testing is only performed for initial diagnosis (no follow-up testing available).

For any inquiries, please contact geneticsmailbox@hhsc.ca

Test was Last Updated: 2/27/2024
Testing Laboratory: Clinical Genetics
Testing Site: JHCC