Blood transfusing is often a very common solution to treat several side effect of any illness or as a compensation for blood loss from a treatment or surgery. But there are several illnesses that originate in the blood itself. Several hospital offer screening and treatment of the same. Haematology is the umbrella term for the branch that deals with diagnosis, prevention, treatment and care of diseases related to blood. The term is originated from Greek words ‘haima’ implying blood, and ‘logy’ implying to study.