In order to achieve optimal fertility, pregnant women need to go to the hospital for various examinations before giving birth. Among them, there are many professional terminology checks, such as Tang screening and non-invasive. Mothers of babies may still not understand what this is, and what is the difference between Tangxi and non-invasive methods?
Tang screening is a common and necessary procedure for postpartum women. It mainly determines the content of proteins, hormones, and other substances by extracting the mother's serum. Non invasive is DNA testing, which involves extracting free DNA from the blood of pregnant women to obtain genetic information of the fetus.
Compared to non-invasive methods, Tang Xi's non-invasive examination is actually better. The accuracy of non-invasive testing is higher, as it involves examining gene chromosomes. The accuracy of non-invasive DNA testing is over 90%. And Tang's accuracy is indeed between 60-70%, greatly reducing the risk of errors during the inspection process.
There are more chromosomes that can be detected non invasively. Non invasive testing can detect three types of chromosomes, while Down syndrome can only detect two types of chromosomes, and the non-invasive examination has a wider range of gestational weeks. However, Down syndrome is divided into different time periods, mainly in the middle and late stages of pregnancy, while non-invasive treatment is suitable for gestational weeks lasting up to gestational weeks 22 and above. Both methods can effectively eliminate deformities. These two tests are also essential during the pregnancy examination process.
