Is it normal for placental maturity to be grade 0 at 13 weeks of pregnancy?

At 13 weeks of gestation, a placental maturity grade of 0 is generally normal. At this stage, the placenta is in its initial developmental phase—fully functional and highly active—capable of providing sufficient nutrients and oxygen to the fetus. Typically, placental maturity remains at grade 0 before 28 weeks of pregnancy, so there is no need for excessive concern. If prenatal examinations reveal an abnormally increased placental maturity grade or other abnormal indicators, it is advisable to seek medical consultation promptly.

The placental maturity is classified into four grades: 0, I, II, and III. Grade 0 indicates an immature placenta, characterized by a smooth chorionic plate, homogeneous parenchyma, and absence of calcification. This condition meets the fetal growth and development needs during early pregnancy and enables efficient material exchange between mother and fetus.

At 13 weeks of gestation, the pregnancy is transitioning from the first to the second trimester. The fetal organs have not yet fully developed, and nutritional demands are continuously increasing. A grade 0 placenta, with its optimal function, ensures adequate nutrient supply and effective removal of metabolic waste. As gestational age progresses, the placenta will gradually mature from grade 0 to grade I and then grade II, typically reaching grade III only after 37 weeks of gestation.

Regular prenatal check-ups are essential during pregnancy to monitor placental maturity and fetal development. Maintain a balanced diet rich in protein, vitamins, and minerals, and avoid excessive calcium supplementation. Engage in moderate physical activity, such as walking, to support stable placental function and provide a healthy environment for fetal growth.