Science of haematology deals with blood and it’s components. It speaks of haemoglobin, Red Blood
Cells, White Blood Cells, Platelets, size and structure of cells and abnormalities of Them.
Haemoglobin: It is most important part of blood as it supplies Oxygen to all tissues of body. If
for any reason somebody lacks proper haemoglobin level, which is called as anaemia, it causes
serious problems such as breathlessness, swelling on body, paleness and even serious cardiac
problems. Deficiency of haemoglobin can be due to many reasons. Some are lack of proper diet,
iron deficient diet, vitamin deficiencies and some hereditary causes. WBCs are very important in
defence mechanism of body. They try to kill the invaders and keep body protected. It is very
important to know about blood parameters to fight diseases and maintaining health.