Myeloproliferative Neoplasms With Hypereosinophilia, FISH

CPT: Contact CPT coding department at 800-222-7566, ext. 6-8400.

To be determined. Updates will be made when available.

Contact CPT coding department at 800-222-7566, ext. 6-8400.

Updated on 10/16/2024

Test Includes

This test includes FISH Probes, FGFR1, JAK2, PDGFRA and PDGFRB.

This test includes FISH Probes, FGFR1, JAK2, PDGFRA and PDGFRB.


Special Instructions

Indicate pertinent clinical diagnosis and previous cytogenetic studies on the test request form if available.

Indicate pertinent clinical diagnosis and previous cytogenetic studies on the test request form if available.


Expected Turnaround Time

5 days


Specimen Requirements


Specimen

Blood, bone marrow, CSF, fixed-cell pellet from a cytogenetic analysis, slides with metaphase and/or interphase nuclei or bone marrow touch prep slides are acceptable for testing

Blood, bone marrow, CSF, fixed-cell pellet from a cytogenetic analysis, slides with metaphase and/or interphase nuclei or bone   marrow touch prep slides are acceptable for testing

Blood, bone marrow, CSF, fixed-cell pellet from a cytogenetic analysis, slides with metaphase and/or interphase nuclei or bone marrow touch prep slides are acceptable for testing marrow touch prep slides are acceptable for testing


Volume

10 mL blood (adult), 5 mL blood (pediatric), 3 mL bone marrow


Minimum Volume

5 mL blood (adult), 1 mL blood (pediatric), 1 mL bone marrow


Container

Green-top (sodium heparin) tube (pediatric Vacutainer is optimal, lavender-top (EDTA) tube is suboptimal); adjust tube size to sample volume to avoid heparin toxicity


Collection

Transporting to the testing lab at room temperature is acceptable. Do not allow the sample to overheat or freeze. Use a cool pack or Labcorp transport kit if necessary. Specimens should optimally arrive in the laboratory within 48 hours of collection. Indicate date of collection on the test request form.


Stability Requirements

TemperaturePeriod
Room TemperatureBlood up to 7 days; bone marrow up to 5 days (do not discard samples out of range; send to laboratory for final determination)
RefrigeratedBlood up to 7 days; bone marrow up to 5 days (do not discard samples out of range; send to laboratory for final determination)
FrozenDo not freeze
Freeze/Thaw CycleDo not freeze

Causes for Rejection

Broken Vacutainer; broken or stained slides; paraffin blocks; paraffin slides; decalcified bone cores; frozen specimen; quantity not sufficient for analysis


Test Details


Use

This test is used for leukemia/lymphoma monitoring of residual disease, transplants and indolent clones.


Limitations

Molecular mutations below the resolution of FISH will not be detected. This test will not detect regions not targeted by FISH probes in this panel.

This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.


Methodology

Fluorescence in situ hybridization (FISH)


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