Final answer:
Prenatal screening for pre-eclampsia is a part of routine prenatal care and includes monitoring through ultrasound and blood pressure measurements, not by prenatal genetic diagnosis (PGD).
Step-by-step explanation:
The prenatal screening for pre-eclampsia includes assessing risk factors and monitoring both the mother and fetus throughout pregnancy. It isn't carried out using prenatal genetic diagnosis (PGD), which is used for screening of human embryos in in vitro fertilization. Instead, care such as ultrasonography and blood pressure measurements is used to detect signs of this condition. It's essential to have routine prenatal care, as advised by the National Institutes of Health, to minimize risks associated with pre-eclampsia and to maintain the health of both mother and fetus.