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Test Code LAB0209863 Immunoglobulin Gene Rearrangement, PCR, Bone Marrow

Additional Codes

Mayo Test ID
BCGBM

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Determining whether a B-cell or plasma cell population is polyclonal or monoclonal using bone marrow specimens

 

Identifying neoplastic cells as having B-cell or plasma cell differentiation

 

Monitoring for a persistent neoplasm by detecting an immunoglobulin gene rearrangement profile similar to a previous neoplastic specimen

Method Name

Polymerase Chain Reaction (PCR)

Reporting Name

Immunoglobulin Gene Rearrange, BM

Specimen Type

Bone Marrow


Shipping Instructions


Specimen must arrive within 7 days of collection.



Specimen Required


Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: Yellow top (ACD)

Specimen Volume: 2 mL

Collection Instructions:

1. Invert several times to mix bone marrow.

2. Send bone marrow specimen in original tube. Do not aliquot.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Bone Marrow Ambient (preferred) 7 days
  Refrigerated  7 days

Reject Due To

Gross hemolysis Reject
Moderately to severely clotted Reject

Reference Values

An interpretive report will be provided.

Interpretation

An interpretive report will be provided.

 

Results will be characterized as positive, negative, or indeterminate for a clonal B-cell population.

 

The interpretation of the presence or absence of a predominant immunoglobulin gene rearrangement profile is sometimes subjective. These results must always be interpreted in the context of other clinicopathologic information to determine the significance of the result.

 

The detection of a clonal immunoglobulin gene rearrangement by this test is not synonymous with the presence of a B-cell or plasma cell neoplasm.

Day(s) Performed

Monday through Friday

Report Available

5 to 10 days

Specimen Retention Time

Bone marrow: 2 weeks; Extracted DNA: 3 months

Test Classification

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

81261-IGH (Immunoglobulin heavy chain locus) (eg, leukemias and lymphomas B-cell), gene rearrangement analysis to detect abnormal clonal populations; amplified methodology (eg. polymerase chain reaction)

81264-IGK (Immunoglobulin kappa light chain locus) (eg, leukemia and lymphoma, B-cell) gene rearrangement analysis, evaluation to detect abnormal clonal populations

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BCGBM Immunoglobulin Gene Rearrange, BM 61113-7

 

Result ID Test Result Name Result LOINC Value
19894 Final Diagnosis: 22637-3
608949 Signing Pathologist 19139-5

Forms

1. Hematopathology Patient Information (T676)

2. If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.