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Red Blood Cell Count - RBC

What does the Red Blood Cell Count - RBC blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:

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The Red Blood Cell Count (RBC) measures the number of red blood cells in a sample of blood. Red blood cells are responsible for carrying oxygen throughout the body. This test is crucial for assessing overall health and can help diagnose various conditions such as anemia, polycythemia, and other blood disorders. It's also useful in monitoring the effectiveness of treatments for blood-related conditions and evaluating the body's ability to transport oxygen efficiently. The RBC count is often considered alongside other parameters like hemoglobin and hematocrit to provide a comprehensive picture of red blood cell health and function.

Acceptable Range:   4.2 to 5.8
Ideal for Women:   4.2-5.4
Ideal for Men:   4.7-6.1
Ideal for Girls:   4.1-5.1
Ideal for Boys:   4.5-5.3
Test Method: blood

What do readings below 4.2 million cells/mcL for Red Blood Cell Count - RBC mean?

A low RBC count, known as anemia, can indicate various health issues:

  1. Iron deficiency
  2. Vitamin B12 or folate deficiency
  3. Chronic diseases (e.g., kidney disease, cancer)
  4. Blood loss (e.g., internal bleeding, heavy menstruation)
  5. Bone marrow problems
  6. Hemolysis (premature destruction of red blood cells)

Symptoms may include fatigue, weakness, shortness of breath, and pale skin. Further testing is usually required to determine the underlying cause and appropriate treatment.

What do readings above 5.8 million cells/mcL for Red Blood Cell Count - RBC mean?

A high RBC count, known as polycythemia, can be a sign of several conditions:

  1. Dehydration
  2. Lung diseases (e.g., COPD, sleep apnea)
  3. Heart diseases
  4. Kidney tumors
  5. Polycythemia vera (a bone marrow disorder)
  6. Living at high altitudes
  7. Smoking

Symptoms may include headaches, dizziness, and an increased risk of blood clots. The underlying cause needs to be identified and treated. In some cases, therapeutic phlebotomy may be recommended to reduce the RBC count.

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