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Blood Counts
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A Complete Blood Count checks the main cells in your blood: red cells, white cells and platelets. It is one of the most common health tests and gives a broad picture of how your body is doing. Low red cells or haemoglobin can point to anaemia, which may cause tiredness, weakness and pale skin. A high white cell count often suggests infection or inflammation, while low platelets may affect how well your blood clots. Doctors use it to screen, diagnose and follow up many conditions.
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No. Eat and drink as normal and book whatever time suits you. If your doctor has combined the CBC with other tests on the same request, follow the fasting instruction for those, since one sample can cover several tests.
Because the analyser does not just count the cells, it also measures them. The counts tell your doctor how many of each cell type you have, and the indices describe their size and haemoglobin content, which helps separate the different causes behind the same count.
It usually points to anaemia, meaning your blood is carrying less oxygen than it should. Iron deficiency is the most common cause and often shows up alongside small, pale red cells. Your doctor will look at the whole pattern and may add a ferritin or iron test before deciding anything.
Most often it simply means your body is dealing with an infection or inflammation, and it settles once that passes. Stress, recent exercise, smoking and some medicines can also raise it. Your doctor reads it together with your symptoms and the differential, and will usually repeat it rather than act on one reading.
Yes, and it is one of the most commonly requested tests for children. Our nurses are trained to take samples from children gently, only a small volume is needed, and a parent stays with the child throughout. Children have their own reference ranges, which change with age.