Prepared as an outcome of ICMR Expert Group on <span class="attribute-to-highlight medbox">Immunophenotyping</span> 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 <span class="attribute-to-highlight medbox">cytometric</span> <span class="attribute-to-highlight medbox">immunophenotyping</span> and will be of use to pathologists, cytometrists, hematologists, technologists and scientists working in this field.