Flow cytometry in the diagnosis in hematologic diseases.

Because of recent advances in instrumentation, immunological reagents, and methods for measuring a variety of cell constituents and functions, there has been increasing interest in clinical applications of flow cytometry. Several commercially available flow cytometers and a growing list of monoclonal antibodies make it feasible for clinical laboratories to apply this technology for phenotyping leukocytes in leukemias, lymphomas, immunological disorders, transplant patients, and infectious diseases. The ability to measure cell constituents such as deoxyribonucleic acid (DNA), ribonucleic acid (RNA), proteins, enzymes, and hormone receptors has added to the list of applications. Use in conjunction with simultaneous phenotyping with monoclonal antibodies makes such measurements even more valuable. Phenotyping specimens from a large number of patients with lymphomas and leukemias, the AIDS related complex, and other immunological disorders, has demonstrated the value of flow cytometry in diagnosis and patient management.