Placenta level 2 plus is recommended for delivery by 42 weeks at the latest. A placenta with a maturity of grade 2 or higher indicates that the placenta is mature and may deliver at any time, but it does not predict exactly when delivery will occur. Under normal circumstances, placental maturity can reach level 2 after 36 weeks of gestation, and labor may be initiated at any time after 37 weeks of gestation. Most pregnant women give birth around their due date, which is 40 weeks of gestation, and it is not recommended to deliver later than 42 weeks at the latest. There is a relationship between placental grading and fetal maturity, but the exact time of delivery varies from person to person. When the placenta is mature, if a pregnant woman experiences premature rupture of membranes, redness, regular contractions, etc., it may be an aura of labor and she needs to go to the hospital in time. In addition, it should be noted that if the placenta maturity has reached level 2 and the fetus is full term, you can wait for natural initiation at 41 weeks, and if it still does not start beyond 41 weeks, you need to be hospitalized to induce labor to avoid the occurrence of overdue pregnancy.