Allowing prenatal diagnosis at 28 weeks of pregnancy is usually due to the suspicion that the fetus may have birth defects and does not necessarily mean that the fetus is at risk.
Prenatal diagnosis is the application of various means before the birth of a fetus with possible birth defects to assess the development of the fetus in the womb, to diagnose the presence of congenital and hereditary diseases, and to provide a basis for elective abortion and intrauterine treatment of the fetus.
Prenatal diagnosis is intended for people at high risk of birth defects. This includes high-risk groups identified by prenatal screening; pregnant women with too much or too little amniotic fluid in the current pregnancy; elderly pregnant women ≥35 years of age; and pregnant women who have given birth to a fetus with chromosomal abnormalities.
Prenatal diagnosis is used to rule out the presence or absence of obvious malformations, chromosomal abnormalities and other diseases in the fetus. If you belong to the high-risk group of birth defects, you should be admitted to the hospital in time, undergo prenatal diagnosis, and comply with the doctor’s instructions for treatment.