What is life span of a transfused Red blood cell?

The lifespan of transfused red blood cells (RBCs) is generally similar to that of naturally produced RBCs, which is about 120 days. However, the lifespan can vary depending on several factors, including the storage conditions of the blood prior to transfusion and the recipient's immune response. In some cases, transfused RBCs may have a shorter lifespan if the recipient's body recognizes them as foreign and begins to destroy them.