Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Erythrocytes (RBC)
An erythrocyte (red blood cell) count measures the number of red blood cells in your blood. Red blood cells are responsible for carrying oxygen from your lungs to the rest of your body and transporting carbon dioxide back for exhalation.
What It Measures
This test measures the total number of red blood cells (erythrocytes) per volume of blood. Red blood cells contain hemoglobin, which binds oxygen and gives blood its red colour. The count provides information about your blood's oxygen-carrying capacity.
Why It Matters
An abnormal red blood cell count may indicate various health conditions. Low counts can be associated with anemia, nutritional deficiencies, or chronic disease, while high counts may be linked to dehydration, lung disease, or bone marrow disorders. Regular monitoring supports early detection of potential issues.
When to Test
Red blood cell counts are typically included in a complete blood count (CBC), which may be ordered as part of routine health screening, when investigating symptoms such as fatigue or shortness of breath, or for monitoring existing conditions.
Symptoms
Low Levels
Fatigue, weakness, pale skin, shortness of breath, dizziness, cold hands and feet, headaches.
High Levels
Headaches, dizziness, blurred vision, excessive sweating, joint pain, itchy skin, reddish complexion.
Lifestyle Tips
Maintain a balanced diet rich in iron, vitamin B12, and folate to support healthy red blood cell production. Stay well hydrated, exercise regularly, and avoid smoking. If you experience persistent fatigue, consult a healthcare professional.
Frequently Asked Questions
What can cause a low red blood cell count?
A low red blood cell count may be associated with iron deficiency, vitamin B12 or folate deficiency, chronic disease, blood loss, or bone marrow disorders. Your healthcare provider can help determine the underlying cause.
Can lifestyle changes improve my red blood cell count?
In many cases, dietary adjustments such as increasing iron-rich foods, vitamin B12, and folate can support healthy red blood cell production. Staying hydrated and avoiding smoking also help. Consult a healthcare professional for personalised advice.