Chromosomal diseases are the most common birth defects. Among them, Down syndrome (trisomy 21), Edward's syndrome (trisomy 18), and Patau's syndrome (trisomy 13) are the most common, with an incidence of 80%-90% of chromosomal diseases.

Take Down’s syndrome (trisomy 21) as an example. There are 26,600 Down’s children born in my country every year, with an average of 1 case every 20 minutes. Chromosomal diseases cannot be cured for life. Down’s children are mentally retarded and cannot take care of themselves as adults. They need guardians to take care of them all their lives, which brings great life and financial difficulties to the sick family.

At present, the only diagnostic method for chromosomal abnormalities is amniocentesis. Because amniotic fluid is drawn in 16-20 weeks for diagnosis of amniocentesis, the NIPT sampling time is 12-22 weeks + 6 days, 4 weeks ahead of time, to gain sufficient time for follow-up treatment; in addition, amniotic fluid puncture is an invasive The invasive examination can easily cause intrauterine infection and even abortion. However, NIPT only needs to draw the peripheral blood of the pregnant woman, which is completely non-invasive and will not cause any hidden danger to the pregnant woman or the fetus.

Yikongenomics provides free insurance for NIPT test subjects and fetuses, with a maximum payment of 400,000 yuan.