The evolution of immunohematology in South Asian countries.

Many factors have resulted in the slow development of transfusion services in some South Asian countries. Despite difficulties, there have been some excellent developments and the outlook for the future is very positive. The biggest problems relate to the availability of the truly voluntary altruistic blood donors and considerable work is still needed to upgrade this aspect of the work. Screening for transfusion transmissible diseases is now widespread although there is still a requirement to enhance quality assurance procedures and to improve statistical definitions and collection. Other factors that have affected the evolution of immunohematology are outlined and there is now optimism for the future.