Final answer:
Normal hemoglobin levels during pregnancy vary by trimester, with >11 g/dL in the first trimester, 10.5-11 g/dL in the second trimester, and 10-10.5 g/dL in the third trimester.
Step-by-step explanation:
Understanding the normal range of hemoglobin (Hgb) levels during pregnancy is important for monitoring maternal health. During the first trimester, the typical hemoglobin range is considered to be above 11 g/dL. Moving into the second trimester, the normal range can be slightly lower due to the increased volume of blood; levels between 10.5 g/dL to 11 g/dL are often seen as normal. Finally, in the third trimester, hemoglobin levels continue to drop as the blood volume further increases to meet the demands of the growing fetus, and levels between 10 g/dL to 10.5 g/dL are considered normal. It is essential for pregnant individuals to have their hemoglobin levels routinely checked to ensure they fall within these normal ranges and to address any potential issues like iron deficiency anemia.