What can non invasive prenatal genetic testing detect?

The main use of genetic testing is for eugenics.

That is, if there is a hereditary disease in the family, genetic testing is required, and when giving birth to offspring, it is necessary to choose not to have children with disease-causing genes, so as to ensure the health of offspring.

At present, the third generation of IVF technology has been able to screen fertilized eggs with genetic diseases. Thus guaranteeing the birth of healthy children.

Now that it is market-oriented, it is purely for your money to do genetic testing for some patients who do not have fertility requirements, and even for ordinary diseases.

True genetic testing only has terms such as misalignment, inversion, deletion, displacement, etc. The use of terms such as high-risk, negative, and positive is just a pretense of genetic testing, and you should understand it.

A real genetic test costs thousands of yuan for a point, and the entire gene chain is composed of hundreds of millions of points. Therefore, it is usually suspected that there is a certain genetic disease, and in order to avoid passing it on to offspring, testing is done at a certain point.

Even if a cancer gene is detected, it is only a little reference, and the chance of cancer may be a little greater. No human gene is perfect, it contains many disease-causing genes, but the number of somatic chromosomes in the human body is 23 pairs, and even if one gene is defective, other normal ones will replace its function. Therefore, if you have a genetic defect, you do not necessarily get sick.

It's okay to live with peace of mind, so there's no need to worry too much.

Non-invasive DNA is also a test to rule out fetal malformations, and the sample used is to take the venous blood of the pregnant woman to detect the free fetal DNA in the venous blood of the pregnant woman for analysis. It can have a higher diagnostic yield than early Tang screening, intermediate Tang screening, and photocorticosteroid testing.

It mainly detects three common chromosomal disorders: Down syndrome (T21 chromosome abnormality).

Non-invasive DNA screening is more accurate than Down screening, and the main test process is to collect 5 mm of blood from pregnant women. High-throughput DNA detection technology can accurately determine whether the fetus has chromosomal abnormalities and can accurately obtain the genetic information of the fetus. At the same time, the fetus can be tested for three major chromosomal disorders.

Therefore, pregnant women can be tested according to their own situation.

Non-invasive DNA prenatal genetic testing is mainly a test for whether there are chromosomal abnormalities in the baby during pregnancy, which can replace a test for Tang screening, and it is also a prenatal test that elderly pregnant mothers must do.

Non-invasive prenatal genetic testing is to determine whether the unborn baby has birth defects, such as developmental delay, multiple malformations, congenital dementia, etc., through modern genetic testing technology. Its approximate detection method is to draw a small amount of venous blood from the pregnant mother, and then detect the fetal cell-free DNA in the mother's blood through high-throughput genetic testing technology. The risk on chromosomes 21, 18, and 13 can be detected.

So, what is the significance of prenatal genetic testing?

The significance of prenatal genetic testing is to avoid birth defects in the baby. Common prenatal genetic tests include traditional Down's screening, amniocentesis and non-invasive prenatal genetic testing. Compared with these three detection methods, amniocentesis is an interventional diagnostic method, which has a risk of about 1% miscarriage; However, Down's screening has the defects of high false positive rate and high missed diagnosis rate. Compared with the first two, non-invasive prenatal genetic testing has the characteristics of non-invasiveness, no risk of miscarriage, and high accuracy.

Therefore, the significance of prenatal genetic testing is very important for every mother, every baby, and every family. The latest non-invasive prenatal genetic testing. It can enable you to enjoy high-quality and professional services before and after childbirth, and take care of the health of your family.

At present, the appropriate detection time for non-invasive prenatal genetic testing is 12 to 24 weeks of gestation. Testing before 12 weeks' gestation may not meet the requirements due to low fetal DNA concentrations in the peripheral blood of the fluid. For ethical reasons, we generally do not test pregnant women over 24 weeks of gestation.

Pregnant women over 24 weeks of gestation can consult a prenatal diagnostic specialist who will conduct an examination before deciding whether the test is necessary.

Trisomy may be detected.