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If fatigue and lack of energy are persistent, despite sufficient rest, it may signal some health problems. A CBC blood test can therefore reveal anaemia, a condition in which there are inadequate red blood cells carrying oxygen throughout the body. This test can also evaluate infections or chronic health problems that cause persistent fatigue.

Alternatively, fatigue can also occur due to low haemoglobin levels, vitamins, or even regular immune system activities. Understanding the cause through a CBC test enables timely medical intervention, preventing further complications.

 2. Frequent Infections

If you find yourself frequently battling infections, from common colds to more severe bacterial or viral illnesses, it may indicate a weakened immune system. The white blood cell count measured by a CBC test plays a crucial role in identifying how well your immune system is functioning.

An abnormally high or low white blood cell count can reveal infections, autoimmune disorders, or even conditions like leukaemia. Early detection through a CBC test ensures appropriate treatment and helps bolster your body's defences.