What is the normal hemoglobin (Hgb) level during the second trimester of pregnancy?

The normal hemoglobin level during the second trimester of pregnancy is approximately 10.5 g/dL. During this period, plasma volume increases significantly, which can result in a dilutional effect on red blood cells and hemoglobin concentration. As a result, acceptable hemoglobin levels slightly decrease from pre-pregnancy levels. While hemoglobin can vary based on individual circumstances, a level around 10.5 g/dL is generally considered acceptable during the second trimester. This reflects the physiological changes that occur in a woman’s body during pregnancy, aiming to support increased blood flow and oxygen delivery to both the mother and developing fetus. Maintaining appropriate hemoglobin levels is crucial, as significantly lower levels can indicate conditions like anemia, which may require medical intervention.