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Plasma Cell Myeloma/Multiple Myeloma — FISH Analysis

CPT Code(s):  88237, 88275, 88271 (x per probe)

Service Code (IU Health): 53101259, 53100707, 53100640

Ordering Recommendation: For diagnosis of new cases of multiple myeloma or other plasma cell proliferative disorders, or to confirm diagnosis and establish prognostic grouping important for subsequent therapy. Companion testing with chromosome analysis will help in further delineating chromosomal abnormalities.

Synonyms: FISH, Hematopoietic malignancy, Plasma Cell Myeloma, Multiple Myeloma, Plasma Cell Proliferative Disorder, Monoclonal Gammopathy of Unknown Significance (MGUS)

Methodology: Fluorescence in situ hybridization (FISH) analysis.

Performed: Monday through Friday

Reported: 2-3 days

Panels: PCM Panel - 1q/8p, 5q, 7q, t(11;14), D13S319/RB1, IGH, TP53/CEP 17 If IGH=abnormal, reflex to t(4;14) and t(14;16). Each probe may be run individually.

Specimen Requirements

Collect: Non-diluted bone marrow aspirate in green-top sodium heparin tube, heparinized syringe.

Specimen Volume: Preferred: 2 mL for normal WBC (decreased WBC requires more, and elevated WBC requires less); Minimum: 0.5 mL

Storage/Transport: Room temperature. Do not freeze or expose to extreme temperatures.

Unacceptable Conditions: Frozen specimens. Formalin-fixed specimens.

Stability: Ambient: 48 hours; Frozen: Unacceptable