Prepared as an outcome of ICMR Expert Group on Immunophenotyping of Hematolymphoid Neoplasms | Coordinated by Division of Non Communicable Diseases | This document addresses on various issue related to good quality practices in laboratory work up of flow cytometric immunophenotyping and will be of use to pathologists, <span class="attribute-to-highlight medbox">cytometrists</span>, hematologists, technologists and scientists working in this field.