What is RBC and its normal range?

RBC stands for red blood cells, which are responsible for carrying oxygen throughout the body. The normal range for red blood cell count (RBC count) varies depending on factors such as age, sex, and geographical location. In general, for adult males, a normal range is around 4.5 to 5.5 million cells per microliter (million/µL) of blood. For adult females, the normal range is typically 4.0 to 5.0 million cells/µL. However, these ranges can slightly vary based on the reference values used by different laboratories. It's important to note that the interpretation of RBC count should consider other factors, such as hemoglobin levels, hematocrit, and clinical symptoms, for a comprehensive assessment of an individual's red blood cell profile.