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FISH studies for inv(16) / t(16;16)(p13;q22) are clinically indicated in new diagnoses of acute myeloid leukemia (AML) for proper diagnostic classification, as the inv16/t(16;16) is a recurrent chromosomal abnormality in AML. FISH testing for this abnormality may also be indicated for follow-up studies to monitor disease progression and response to therapy. Translocations/inversions of chromosome 16 are found in about 10% of AML, with approximately half of these cases being AML M4 subtype with abnormal eosinophilia. The CBFB-MYH11 fusion gene is formed due to a pericentric inversion on chromosome 16, inv(16)(p13q22), or in rare instances, is due to a translocation: t(16;16)(p13;q22). Probe type: Dual color breakapart
Organ: Blood/Bone Marrow
Disease State: Acute Myeloid Leukemia (AML) / Myeloid Sarcoma
CPT Code(s): 88374. The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
Turnaround Time: Within 4-6 business days of receipt
Schedule: Monday - Friday
• Peripheral blood, Preferred: 3 ml in sodium heparin (green top) / Acceptable: 3 ml in EDTA (purple top) - OR - • Bone marrow aspirate, Preferred: 1-2 ml in sodium heparin (green top) / Acceptable: 1-2 ml in EDTA (purple top) - OR - • Fresh tissue in RPMI