What is the typical lifespan of a red blood cell?

The typical lifespan of a red blood cell (RBC) is approximately 120 days. This duration reflects the time it takes for RBCs to circulate throughout the body, effectively performing their primary function of transporting oxygen from the lungs to various tissues and returning carbon dioxide from tissues back to the lungs.

After this period, red blood cells become less flexible and more prone to damage as they age. They are then typically removed from circulation by the spleen and liver, where they are broken down and their components recycled.

Understanding the lifespan of red blood cells is vital in hematology, as it helps in assessing various blood disorders and conditions. It also contributes to comprehending the dynamics of blood production and destruction, which are crucial in diagnosing and managing anemia and other hematological conditions.