What is the name of the abnormal hemoglobin produced in sickle cell anemia?

The abnormal hemoglobin produced in sickle cell anemia is known as Hgb S. Sickle cell anemia is a genetic disorder where the body produces an abnormal form of hemoglobin that leads to the characteristic sickle-shaped red blood cells. These cells can cause blockages in small blood vessels, leading to various complications such as pain episodes and increased risk of infections.

Hgb A refers to normal adult hemoglobin, while Hgb F is fetal hemoglobin that is typically present in newborns and gradually decreases after birth. Hgb C is another variant of hemoglobin but is associated with a different condition, namely hemoglobin C disease, which does not result in the same sickling phenomenon seen in sickle cell anemia. Therefore, when identifying the specific hemoglobin variant associated with sickle cell anemia, Hgb S is the distinct and correct choice.