This blood test gives an indication of the quality of your blood cells. If there is a rise in white cell count it can indicate an infection. The white cell count can further be broken down into different subtypes. This is called a differential count. Types of cells looked at here are neutrophils, lymphocytes, basophils and eosinophils. These types of white blood cells help your immune system (your body’s defence) to fight off the infections.
If the red blood cells and haemoglobin are too low it may indicate bleeding somewhere in the body. The amount of haemoglobin, which is carried in red blood cells, is an indication of your blood’s ability to carry oxygen to the cells. A low red blood cell count is referred to as anaemia and can explain why you may be feeling excessively tired. Liver disease may be suspected when your platelets are low. Platelets are cell fragments that play an important part in clotting by plugging or covering a broken blood vessel.
Haematocrit indicates the amount of red blood cells you have suspended in the plasma (the sticky, clear fluid in your blood). It is important to look at all the blood tests as so many values are dependent on each other.