Question 1

What is Red Blood Cells (RBC)?

Accepted Answer

Red blood cells (erythrocytes) contain hemoglobin and transport oxygen. Together with hemoglobin, the count reflects oxygen-carrying capacity.

Question 2

What are the normal Red Blood Cells (RBC) levels?

Accepted Answer

Men: 4.0–5.1 ×10¹²/L. Women: 3.7–4.7 ×10¹²/L. (×10¹²/L)

Question 3

What causes low Red Blood Cells (RBC)?

Accepted Answer

Anemia, blood loss, iron or B12 deficiency, chronic disease.

Question 4

What causes high Red Blood Cells (RBC)?

Accepted Answer

Dehydration, smoking, high altitude, polycythemia.

Question 5

When should I see a doctor about Red Blood Cells (RBC)?

Accepted Answer

If abnormal, especially with fatigue, pallor, or shortness of breath.

Red Blood Cells (RBC)

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