Our global life sciences company brings diagnostic testing & drug development together.

B-Cell Gene Rearrangements Profile, IgH and IgK

CPT: 81261; 81264
Print Share


  • IgH Clonality Assay
  • IgH Gene Rearrangement Assay
  • IgK Clonality Assay
  • IgK Gene Rearrangement Assay

Special Instructions

Please direct any questions regarding this test to customer service at 800-345-4363.

Expected Turnaround Time

5 - 7 days

Specimen Requirements


Whole blood, bone marrow, formalin-fixed, paraffin-embedded (FFPE) tissue block or slides, fresh or frozen tissue


3 to 5 mL whole blood, 1 mL bone marrow, five unstained slides at 10 μM or formalin-fixed, paraffin-embedded tissue block, tissue in RPMI or frozen

Minimum Volume

0.5 mL whole blood, 0.5 mL bone marrow, two unstained slides at 10 μM


Lavender-top (EDTA) tube, yellow-top (ACD) tube, green-top (heparin) tube, FFPE tissue block or slides, or tissue in RPMI or frozen


Fresh tissue should be placed in RPMI medium or shipped frozen on dry ice. Small samples (eg, punch biopsies, fine-needle aspirates) will also be accepted. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate specimens for each test requested.

Storage Instructions

Maintain blood, bone marrow or tissue in RPMI at 2°C to 8°C; FFPE specimens at room temperature; tissue at -80°C.

Causes for Rejection

Frozen whole blood/bone marrow; quantity not sufficient for analysis; tumor tissue; broken or stained slides

Test Details


This profile can be used to detect clonal B-cell immunoglobulin heavy chain (IgH) and immunoglobulin κ light chain (IgK) gene rearrangements in blood, bone marrow, and tissue specimens with combined B-cell clonality detection rate of 99%. The presence of a monoclonal gene rearrangement usually, but not always, reflects the presence of a B-lymphocytic neoplasm, while polyclonal gene rearrangement patterns are found in benign reactive condition. Thus, the results of these studies can assist in the diagnosis of lymphoproliferative disorders.


This PCR assay is able to detect a clonal DNA population at the sensitivity of 5% in a background of polyclonal DNA.

This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).


Polymerase chain reaction (PCR)


Bruggemann M, White H, Gaulard P, et al. Powerful strategy for polymerase chain reaction-based clonality assessment in T-cell malignancies Report of the BIOMED-2 Concerted Action BHM4 CT98-3936. Leukemia. 2007 Feb;21(2):215-221.17170730
Langerak AW, Groenen PJ, Bruggemann M, et al. EuroClonality/BIOMED-2 guidelines for interpretation and reporting of Ig/TCR clonality testing in suspected lymphoproliferations. Leukemia. 2012 Oct;26(10):2159-2171.22918122


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
481222 B Cell Panel (IgH, IgK) 480717 B-Cell PCR Interpretation 21747-1
481222 B Cell Panel (IgH, IgK) 480827 B Clonal Size n/a
481222 B Cell Panel (IgH, IgK) 480778 Block Number: n/a
481222 B Cell Panel (IgH, IgK) 489025 Director Review: 72486-4
481222 B Cell Panel (IgH, IgK) 480720 Methodology: 49549-9
481222 B Cell Panel (IgH, IgK) 481529 References: n/a
481222 B Cell Panel (IgH, IgK) 480813 IgK PCR Interpretation 21748-9
481222 B Cell Panel (IgH, IgK) 480828 K Clonal Size n/a
481222 B Cell Panel (IgH, IgK) 480777 Block Number: n/a
481222 B Cell Panel (IgH, IgK) 489028 Director Review 72486-4
481222 B Cell Panel (IgH, IgK) 480831 Methodology: 49549-9
481222 B Cell Panel (IgH, IgK) 480842 References: n/a

For Providers

Please login to order a test

Order a Test

© 2021 Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.

CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at Additional information regarding LOINC® codes can be found at, including the LOINC Manual, which can be downloaded at