Flow cytometry immunophenotyping of hematolymphoid neoplasia

Katherine R Calvo1, Catharine S McCoy, Maryalice Stetler-Stevenson

  • 1Department of Laboratory Medicine, Hematology Section, National Institutes of Health Clinical Center, Bethesda, MD, USA.

Insights

Flow cytometry immunophenotyping (FCI) provides crucial insights for diagnosing hematolymphoid neoplasms like leukemia and lymphoma. This chapter details specimen handling, gating, and antibody panels for effective FCI analysis of abnormal cells.

Area of Science:

  • Hematology
  • Immunology
  • Clinical Pathology

Background:

  • Flow cytometry immunophenotyping (FCI) is essential for diagnosing hematolymphoid neoplasms.
  • Accurate subclassification of leukemias, lymphomas, and myelodysplasia relies on FCI.
  • Identifying aberrant immunophenotypes is key in hematologic diagnostics.

Purpose of the Study:

  • To present a general approach for analyzing hematolymphoid populations using FCI.
  • To outline strategies for identifying neoplastic cells based on immunophenotype and scatter properties.
  • To guide the selection of appropriate antibody panels for FCI.

Main Methods:

  • Specimen handling protocols for hematolymphoid samples.
  • Gating strategies for isolating and analyzing cell populations.
  • Selection and application of antibody panels for detecting abnormal hematologic populations.

Main Results:

  • Demonstration of FCI's utility in identifying aberrant immunophenotypes.
  • Illustration of abnormal maturation patterns and light chain restriction.
  • Highlighting abnormal light scatter properties indicative of neoplastic processes.

Conclusions:

  • FCI is a powerful tool for the diagnosis and subclassification of hematolymphoid disorders.
  • A systematic approach to specimen handling, gating, and antibody selection enhances FCI accuracy.
  • This chapter provides a foundational guide for applying FCI in clinical hematology.