This basic text is intended to trigger the interest of students as well as optimise the training and practice of Haematology in developing countries particularly in sub- Saharan Africa. It is aimed at improving the knowledge and skills of allied medical and medical students and other healthcare professionals involved in the management of haematological diseases, empowering them to offer the best possible quality services to their patients. This book is suitable not only for allied medical and medical students preparing for their examination in transfusion medicine but also for postgraduates preparing for examination in general medicine and haematology. The chapters have been presented in an annotated and easy to understand format.