The timing of prenatal diagnosis in Zheng University First Affiliated Hospital: from 10 weeks to 14 weeks of pregnancy, fetal chorionic villus sampling is usually used for prenatal diagnosis of single gene genetic diseases with clear genetic mutations, such as DMD, SMA, hereditary deafness, phenylketonuria, hemophilia, various genetic metabolic diseases, various blood and immunodeficiency genetic diseases, etc. It is also used for prenatal paternity testing of fetuses, etc. Fetal amniotic fluid sampling is usually used for fetal chromosome analysis for high-risk Down’s syndrome screening and older pregnant women, and also for prenatal diagnosis of monogenic genetic disorders and fetal paternity test with missed chorionic villus sampling, etc. The cost of prenatal diagnosis at Zheng University First Affiliated Hospital: Fetal chorionic villus monogenic genetic disorders prenatal diagnosis (including surgery and genetic analysis) costs about 3400 RMB Fetal amniotic fluid monogenic genetic disorders prenatal diagnosis (including surgery and genetic analysis) costs about 3400 RMB The cost of prenatal diagnosis of monogenic genetic disorders in fetal amniotic fluid (including surgery and genetic analysis) is about RMB 2,900 The cost of prenatal diagnosis of chromosomal analysis in fetal amniotic fluid (including surgery and genetic analysis) is about RMB 2,000 Requirement Fetal chorionic villus or amniotic fluid sampling time: Tuesday afternoon and Friday afternoon every week, no appointment required No need to do preoperative examination in advance at outside hospital, preoperative examination in our hospital (100 yuan) can be issued within 1 hour Results can be returned to the place of residence on the same day after surgery without additional risk