This module introduces the components of blood and the common disorders affecting them. It also deals with the principles and techniques of haematology laboratory investigations that are useful in the diagnosis of diseases and monitoring the progress of treatments. In the laboratory sessions, students are exposed to techniques involving the handling and processing of blood and blood products for diagnostic purposes in routine clinical laboratories. This module gives students an overview of the investigation techniques employed by the haematology laboratory and blood bank, the rationale behind these tests and the correlation with clinical conditions. Students also learn about good laboratory practices, as well as record keeping, literature reading, specimen analysis, results interpretation, and presentation.