Placental calcification commonly increases with gestational age, and becomes apparent after 36 weeks' gestation. When it becomes notable prior to 36 weeks' gestation, it is considered to be preterm placental calcification5.

How do you know if your placenta is calcifying?

One of the most common symptoms that women with a calcified placenta describe is that their baby seems to move less than normal or stops moving altogether, even though they are close to term. Women with placental calcification will typically notice that their baby seems to move less when they wake up in the morning.

How quickly does placenta calcify?

So while calcification of a placenta at term – around 39-42 weeks is part of the normal appearance of a full-term placenta and has no clinical significance in a healthy pregnancy, the appearance of significant calcification earlier in pregnancy is associated with risks to both the mother and baby.