How long does it take for non-invasive results to come out?

The repeated examinations that pregnant women undergo at each stage of pregnancy are different, and when pregnant women are between 16 and 24 weeks pregnant, they need to undergo non-invasive DNA testing. Everyone knows the harm that Down syndrome brings to babies and their parents. Non-invasive DNA testing is an effective way to detect whether Down syndrome exists. Therefore, pregnant women are generally quite nervous when doing non-invasive DNA tests. How long will it take for the non-invasive DNA test to produce results?

How long does it take for non-invasive DNA results to come out?

Non-invasive DNA testing is safer by collecting 5-10 ml of peripheral blood from pregnant women and extracting free DNA. Compared with traditional amniocentesis testing, there is no need to insert relevant equipment deep into the pregnant woman's body to take samples, allowing pregnant women to undergo the examination easily and comfortably. Since 2012, non-invasive DNA testing has been able to accurately detect the three major chromosomal diseases: Down syndrome (T21), Edwards syndrome (T18), and Patau syndrome (T13). The non-invasive nature of non-invasive DNA prenatal testing can avoid the risks of miscarriage and infection caused by invasive diagnosis. The mature performance of DNA sequencing technology ensures the accuracy of the technology. Pregnant women can be tested when they are more than 12 weeks pregnant, and the test results will be available within 10 working days. So, compared to sheep wearing. Non-invasive DNA is a more suitable option for mothers, but currently, not all hospitals can do it.

What is non-invasive DNA testing?

Non-invasive prenatal DNA testing is also known as non-invasive prenatal DNA testing, non-invasive fetal chromosome aneuploidy testing, etc. According to the American College of Obstetricians and Gynecologists Committee, an internationally authoritative academic organization, non-invasive prenatal testing is the name of the most widely used technology. The non-invasive DNA prenatal testing technology only requires the collection of venous blood from pregnant women, and uses the new generation of DNA sequencing technology to sequence the free DNA fragments (including fetal free DNA) in the maternal peripheral plasma. The sequencing results are then subjected to bioinformatics analysis, from which the genetic information of the fetus can be obtained, thereby detecting whether the fetus suffers from the three major chromosomal diseases.

Non-invasive DNA for prenatal check-up

1. Pregnant women who are older (≥35 years old) and unwilling to choose invasive prenatal diagnosis;

2. Pregnant women whose Down syndrome screening results are high risk or whose single index values ​​have changed and who are unwilling to choose invasive prenatal diagnosis;

3. Pregnant women whose fetal NT value is increased or other anatomical abnormalities are found in B-ultrasound during pregnancy and who are unwilling to choose invasive prenatal diagnosis;

4. Pregnant women who are not suitable for invasive prenatal diagnosis, such as virus carriers, placenta previa, placenta low, oligohydramnios, RH negative blood type, history of miscarriage, threatened miscarriage or precious baby, etc.;

5. Pregnant women who are unwilling to undergo or cannot undergo invasive prenatal diagnosis again after amniocentesis cell culture failure; pregnant women who wish to exclude fetal trisomy 21, trisomy 18, and trisomy 13 syndrome and voluntarily choose non-invasive prenatal testing.

6. Pregnant women with positive serum screening and those who have psychological barriers to prenatal diagnosis; every couple is at risk of giving birth to a child with chromosomal diseases. Its occurrence is accidental and random, with no prior signs, no family history, and no clear history of exposure to toxic substances. The incidence rate increases with the age of the pregnant woman. There is currently no effective treatment for chromosomal diseases.