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A red blood cell count can be used to measure an increase or decrease in the number of red blood cells.
An increase in red blood cells is known as polycythaemia and a decrease is known as anaemia.
A red blood cell (RBC) count is usually carried out as part of a full blood cell (FBC) count, and can help diagnose health conditions that affect the blood.
For example, if you have a high red blood cell count it could be due to a condition such as congenital heart disease or dehydration.
A low red blood cell count may be a sign that you have anaemia, internal bleeding, kidney disease or malnutrition (when a person’s diet does not contain enough nutrients to meet their body's demands).
A low count may also be a sign of an iron deficiency or a vitamin B6, B12 or folate deficiency.
Read more about the red blood cell count at Lab Tests Online UK.
Important: Our website provides useful information but is not a substitute for medical advice. You should always seek the advice of your doctor when making decisions about your health.
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