Intended Use
An isochromosome of the long arm of chromosome 17, i(17q), is the most frequent genetic abnormality observed during the disease progression of Philadelphia chromosome positive (Ph+) chronic myeloid leukemia (CML). Isochromosome 17q, or i(17q), is ocurring in primitive neuroectodermal tumor/medulloblastoma (50%), chronic myeloid leukemia (CML), acute myeloid leukemia (AML), and myelodysplastic neoplasms (MDS).
Patient Preparation
- Sample collection: FFPE Tissue Block (or) Non-diluted bone marrow aspirate (or) Peripheral Blood collected in a sodium heparinized Vacutainer.
- Specimen preparation: Do not freeze or expose to extreme temperatures.
- FFPE Tissue Block: Formalin fix (10 percent neutral buffered formalin) and paraffin-embed tissue (3–4-micron thick sections in positively charged/silanized slides). Fixative duration: 6-48 hours.
- Bone Marrow: Transfer 3 mL bone marrow to a Green (Sodium Heparin). (Min: 1 mL)
- Whole Blood: Transport 5 mL whole blood. (Min: 2 mL)
- Storage/Transport Temperature: Room temperature.
- Unacceptable Conditions: Frozen specimens. Clotted specimens.
- Remarks:
- Stability: Ambient: 48 hours; Refrigerated: 48 hours; Frozen: Unacceptable
Methodology
Fluorescence in situ Hybridization (FISH)
Sample received to report Turnaround time (TAT)
3 working days
Reference Interval
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Interpretive Data
The most recent WHO classification of Tumours of Hematopoietic and Lymphoid Tissues (Revised 5th edition) is used for interpretation criteria for evaluation.
Resources
- Additional Technical Information
- Test Request Form
Sample Reports
- Enhanced Report
- See report