Normal Reference Range for Alpha-Fetoprotein (AFP) in Pregnant Women
May 23, 2022
Source: Cainiu Health
Dr. Chen Zhe
Introduction
The normal reference range for maternal alpha-fetoprotein (AFP) is below 400 ng/mL. Levels within this range are considered normal, so there is no need for excessive concern; AFP secretion naturally increases during pregnancy. In non-pregnant individuals, elevated AFP levels typically suggest hepatocellular carcinoma or other malignancies; however, a marked increase in AFP during pregnancy is physiologically normal. It is highly advisable to perform timely prenatal chromosomal testing of the fetus.
Pregnant women must diligently attend routine prenatal check-ups and closely monitor various fetal parameters in daily life. So, what is the normal reference range for maternal alpha-fetoprotein (AFP)?
Normal Reference Range for Maternal Alpha-Fetoprotein (AFP)
The normal reference range for maternal AFP is below 400 ng/mL. Levels within this range are considered normal, and there is no need for excessive concern. During pregnancy, AFP secretion naturally increases. In non-pregnant individuals, elevated AFP levels typically suggest conditions such as hepatocellular carcinoma or other malignancies; however, a marked rise in AFP during pregnancy is physiologically normal. Only when AFP exceeds the upper limit of the normal range should other potential complications be considered—such as ovarian tumors in the mother or abnormal fetal development. Timely fetal chromosomal testing is therefore highly recommended. Pregnancy induces widespread physiological adaptations across multiple body systems—including increased blood volume and elevated heart rate—making it a significant challenge to maternal health.
During early pregnancy, the diet should be light, nutritious, and easily digestible. Additionally, consuming foods rich in folic acid benefits fetal development. To prevent neural tube defects, low-dose folic acid supplementation is routinely recommended during the first trimester. Pregnant women are also advised to include folic acid–rich foods—such as oranges and grapefruits—in their diet.
Pregnant women should engage in appropriate physical activity, maintain regular sleep schedules, exercise moderately, and enhance their immunity. We hope this information proves helpful!
