Blood Tests


A low red blood cell count (anaemia) can affect the amount of oxygen reaching the balance part of the brain even when the blood pressure is normal. A low blood sugar level (hypoglycaemia) may also cause dizziness. Patients complaining of lightheadedness, a faint sensation or imbalance should therefore have a blood test to exclude anaemia.


A blood sample is taken by the ENT Practice Nurse after the application of a rubber tourniquet to the upper arm. The samples are sent directly to the TDL laboratories for immediate analysis.

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