Prenatal diagnosis, also known as prenatal intrauterine diagnosis, is to understand the fetal condition through methods such as amniocentesis, mainly to determine whether there are certain malformations and genetic defects. Antenatal diagnosis of every pregnant woman is not possible or necessary. However, if you have any of the following conditions, you should consider prenatal diagnosis.
(1) The couple is closely related by blood.
(2) Have a family history of genetic diseases.
(3) There is a history of exposure to obvious teratogenic factors in the first trimester of pregnancy, such as poisons, radiation, the use of adverse drugs, rubella, etc.
(4) Pregnant women are over 35 years old.
These conditions are first consulted by genetic counseling and then a prenatal diagnosis is determined. This test is usually done at 16 to 20 weeks' gestation.
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