A blood film or peripheral blood smear is a thin layer of blood smeared on a microscope slide and then stained in such a way to allow the various blood cells to be examined microscopically. Blood films are usually examined to investigate disorders of the blood and, occasionally, to look for parasites within the blood such as malaria and filaria.
- Helmut Löffler, Johann Rastetter, Torsten Haferlach, H. Begemann: Atlas of Clinical Hematology. Springer; 6th revised ed. 2005 edition (2004) p.4 ISBN 354021013X