Days Set Up
Monday - Friday, 8:00am - 4:00pm
Analytic Time

For diagnostic samples, the results of t(4;14) and 17p (TP53) will be provided in a preliminary report within 7 days. The final report will be completed in 14 days.

Soft Order Code
CGMMP

Test Updated:

Synonyms

FISH for Multiple Myeloma
Plasma Cell Proliferative Disorder (PCPD), FISH
FISH for Plasma Cell Disorder

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All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

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Test Overview

Test Methodology

Plasma cell (CD138) enrichment
Interphase Fluorescence In Situ Hybridization (FISH)

Test Usage

Multiple myeloma FISH panel aids in stratifying individuals with newly diagnosed multiple myeloma into risk groups for prognosis and selection of therapy. It is also useful in following up remission or relapse status.

For diagnostic samples, the test will be run in a tiered approach. The first tier tests include 17p/cen (TP53/CEP17), t(4;14) (IGH/FGFR3), 14q (IGH), and 1p/1q (CKS1B/CDKN2C). Second tier probes are, +5 (D5S23, D5S721), +9 (CEP 9), +15 (CEP15), 8q24 (MYC), and del(13q)/-13 (D13S319/13q34). When an IGH rearrangement is identified and the partner is not FGFR3, reflex testing is performed to identify the translocation partner. Probes include identification of t(11;14) CCND1/IGH, t(14;16) IGH/MAF, and t(14;20) IGH/MAFB.

For follow-up samples, probes that were abnormal in a previous study will be tested along with 1p/1q, TP53/cen17 and MYC probes if sufficient plasma cells are obtained. If previous FISH results were unknown, the sample will be evaluated as a diagnostic sample.

Reference Range

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a sterile syringe rinsed with sodium heparin or a green top Vacutainer® (sodium heparin) tube. Invert several times to prevent clotting. Send at room temperature as soon as possible. Do not allow specimen to overheat or freeze. Please complete a MiChart test request and submit it with the specimen. A Cytogenetics Laboratory Requisition is available online at:http://www.pathology.med.umich.edu/handbook/Tables/UM_REQ_CYTOGENETICS…. Multiple Myeloma FISH panel testing may be performed as a "stand alone" test or included with Chromosome Analysis.

Collection Offsite

Specimen transport should be arranged so that the specimen is received by MLabs the same day it is collected. The sample must be in the Cytogenetics lab Monday - Friday by 4pm. Call for a STAT courier if necessary. Collect specimen in a green top (sodium heparin) tube. Invert the tube several times to prevent clotting. Send at room temperature as soon as possible. Do not allow specimen to overheat or freeze. Clotted samples or those that are greater than 24 hours old are suboptimal. Multiple Myeloma FISH panel testing may be performed as a "stand alone" test or included with Chromosome Analysis.

Normal Volume
2 mL bone marrow
Minimum Volume
1 mL bone marrow

Billing Information

CPT Code
88271x1 for each DNA probe set (maximum x10), 88275x1 Interphase in situ hybridization, 100 to 300 cells, each probe set (maximum x10)
Pro Fee Code
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.