Amniocentesis is a prenatal test in which the amniotic fluid of a pregnant woman is extracted by puncture as a specimen for the diagnosis of congenital genetic disorders, congenital metabolic disorders and neural tube developmental defects of the fetus. It is also useful for the determination of fetal lung maturity and for the diagnosis of infectious diseases of the amniotic cavity. The cost of amniocentesis is not very uniform. The cost varies depending on the hospital chosen and the items examined, and is around 2,000 RMB for a routine examination. The cost may be higher depending on the amniotic fluid and cord blood that is drawn, and you should consult the hospital you are visiting for the exact cost. If the mother has given birth to a fetus with chromosomal abnormalities in the past, if there are genetic predispositions in the family, or if Down’s syndrome screening indicates a high risk, or if there are abnormalities in ultrasound indicators, it is recommended to have a good prenatal diagnostic consultation and to follow the doctor’s advice on whether to have an amniocentesis to better understand the development of the fetus and to rule out abnormalities. The best time for amniocentesis is between 18 and 22 weeks of gestation, and it is basically performed under visual ultrasound, which is relatively safe in general. In addition, it is important to avoid bathing for 24 hours after the amniocentesis procedure, to take more rest, and to avoid heavy exercise and physical labor such as carrying heavy objects. If there are any symptoms such as abdominal pain, bloating, vaginal flow, bleeding and fever within 3 days after the procedure, you should go to the hospital as soon as possible.