Kappa light chains in situ hybridization (ISH)-12376 - Technical only, 12379 - Technical & interpretation

Test info

  
Kappa light chains in situ hybridization (ISH)
  
12376 - Technical only, 12379 - Technical & interpretation
  
LAB12376
LAB12379
  
Kappa
Kappa light chains ISH
Kappa ISH
  
  • All ISH stains will include a positive control tissue
  

Kappa and Lambda stains are used to determine monoclonality in malignant plasmacytic or lymphoid populations, and polyclonality in benign populations

Specimen

  
Tissue
  

Submit a formalin-fixed, paraffin-embedded tissue

  

Formalin-fixed, paraffin-embedded (FFPE) tissue block

  

FFPE tissue section mounted on a charged, unstained slide

  

Ambient (preferred)

  
  • Unlabeled/mislabeled block
  • Insufficient tissue
  • Slides broken beyond repair

Performance

  
AHL - Immunohistochemistry
  
Mo - Fr
  
1 - 2 days
  

In-situ hybridization (ISH) and microscopic examination

Clinical and Interpretive info

  

If requested, an interpretive report will be provided

  

Specifications

  • Kappa antibody reacts with free kappa chains and kappa chains in immunoglobulin complexes

Staining pattern

  • Cytoplasmic staining is present in plasma cells, and in plasmacytoid lymphocytes
  • Cell surface membrane staining can be seen on B-lymphocytes (this pattern is less likely to be identified on paraffin sections, but is more easily identified on frozen tissue)
  • Since endogenous immunoglobulin is present in all human tissues, diffuse "background" staining is expected

References

  1. Wolf BC, et al: An evaluation of immunohistologic stains for immunoglobulin light chains in bone marrow biopsies in benign and malignant plasma cell proliferations. Am J Clin Pathol 94:642-746, 1990.

Billing

  
88365 - 1st stain
88364 - each additional stain

Tracking

  
07/16/2017
  
08/04/2022
  
01/12/2024