A few days ago, Sister Sa wrote an article about Tangshi Er . Everyone's response was very enthusiastic. Many readers also asked Sister Sa about Tangshi Screening in the background. Several of them asked this question:
Sister Sa Sa, isn't Tangshi Screening relatively low? Then why do you still need to check?
Sister Sa, I heard that non-invasive DNA is higher, so I would rather spend more money. Can I not do non-invasive screening?
Sajie, what is the difference between Tang Silk and Wu Chuang?
Because I really can't reply in the background in detail, Sister Sa will tell you about what the difference between Down's screening and non-invasive DNA is, and how should we choose.
First talk about Down's screening. In fact, many places have achieved free screening. After pregnant women establish files, this item is included in the routine prenatal screening items. The method of screening for
Down is to draw the mother's peripheral blood on an empty stomach on . By detecting the concentration of type A fetal protein, villous gonadotropin and free estriol in the maternal serum, and combining the age, weight, gestational week of the pregnant woman to perform a series of calculations to determine the risk coefficient of the fetus suffering from congenital foul and neural tube defects.
Down's screening time is required for 15 to 20 weeks. Indeed, in terms of accuracy, the accuracy of of ordinary Down's screening is about 70% to 80%, and there is a certain false positive rate of , and this probability is about 5% . For more responsible issues such as microdeletion or microrepetition of genes, ordinary Down's screening cannot detect.
In comparison, the screening time range of non-invasive DNA testing can be performed wider. Screening can be performed between and when pregnant. does not require an empty stomach to draw blood. It is more accurate than Down's screening. The detection rate of for Down's syndrome can reach about 99%, and the false positive rate can be as low as about 1%.
Noninvasive DNA is divided into different levels, which has important auxiliary examination significance for fetal chromosomal diseases.
However, non-invasive DNA is not all advantages. It has one defect, that is, the non-invasive screening of is aimed at chromosomes, but does not include an assessment of the risk coefficient for open neural tube defects. This is included in the Down screening.
Compared with non-invasiveness, Tang Sieve has one of the biggest advantages, that is, is cheaper and . Tang Screening in some areas is a free screening project, and some places have not implemented it yet, but the general charge is only around 200 yuan. Even if it is not free, most families can accept it and can afford it.
Some readers have asked me: Since the accuracy of Down’s screening is not high enough, why not popularize non-invasive DNA? Isn’t it more reassuring that everyone just does non-invasive? The question of
is actually not difficult to answer: is too expensive because it is non-invasive, and if it is free to popularize it, it is not very realistic at present. It is not realistic to ask everyone to come up and check it at your own expense.
The cost of a non-invasive DNA screening is generally around 2,000 yuan, and this 2,000 yuan is not a big deal for some pregnant mothers. However, for some families, especially rural pregnant women in underdeveloped cities, this 2,000 yuan is a big deal.
Sometimes, it’s really not that they don’t want to do it, they can’t afford it.
Not all corners of the world are bright and beautiful. Sometimes we just can’t see and understand the hard and poor side.
However, Sister Sa believes that if our country becomes more and more developed in the future, the policies for pregnant women will be more beneficial to the people, and non-invasive coverage will also have hope in the future.
. After comparing the difference between Tang sieve and non-invasive, the following is the key point:
Am I doing ordinary Tang sieve? Or do non-invasive DNA?
Sa Jie’s suggestion is:
Down’s screening, it is like a simple and generous pure cotton T-shirt with affordable style. It is comfortable to wear and simple style. It can be affordable for ordinary people to wear. It is more suitable for home life.
and non-invasive DNA are like a more high-end custom dress, using more advanced fabrics, better cutting methods, and more reasonable styles. Of course, it also requires a higher price. You can wear it not only as a piece of clothing that can cover your body, but also participate in some important occasions to highlight your personal style.
In normal life, a simple and generous life outfit can meet the requirements of most of us, but if you have no problem with your financial ability and want to be prepared for any trouble, you can also get both of them.
If you are a pregnant mother without any high-risk factors, that is, you are not an elderly pregnant woman, and the couple has normal chromosomes and have not given birth to a fetus with chromosome abnormalities, you do not need to consider prenatal diagnosis when you come up. We only need routine screening and can choose any of the above two methods.
may also be given priority for Down's screening. If you find or suspect a problem, or feel that you are not at ease, you can further perform non-invasive DNA testing.
For many regions, the free popularization of Down's screening has been achieved. Sister Sa's suggestion is:
Don't think that free is not good, of course you have to do it.
is not just because it is free, and it is not done in vain, but because Sister Sa mentioned just now:
Down's screening includes screening for congenital neural tube defects, and non-invasive DNA does not include this item.
If you accidentally missed the Down screen for some reason, , then you can hurry up and perform non-invasive DNA remedies before the gestational week has exceeded 26 weeks.
If you choose to do non-invasive from the beginning, then remember that non-invasiveness does not screen for neural tube defects, so it is best to do a systematic ultrasound examination after 16 weeks of pregnancy, focusing on eliminating fetal neural tube malformation , which is what the teacher told us when we were in school.
If Down's screening is found to have high risks and is worried that prenatal diagnosis will have certain risks, you can consider further screening of non-invasive DNA or prenatal diagnosis.
If you are a high-risk pregnant woman, such as women over 40 years old, women with chromosome problems with couples, women who have had children with chromosome defects, etc., in order to ensure that everything is foolproof, you can also make prenatal diagnosis--- amniotic fluid puncture .
After all, non-invasive DNA still cannot reach 100% accuracy, and there is a risk of missing screening of less than 1%. Therefore, even if we have done non-invasiveness, we must not relax later prenatal examinations, and we must be cautious when treating major ejaculation and other abnormalities. If other ultrasound soft indicators are found, we need to consider whether to undergo prenatal diagnosis at the discretion.
From pregnancy to giving birth, the whole process is like a difficult upgrade to kill monsters, one level after another, one level after another, allowing you to pass this level and the next level.
And these prenatal examination methods are all to help us pass the clearance smoothly and to protect us.
When the baby is in the belly, we will look forward to the baby coming out every day, and feel that the old mother will feel at ease when she comes out!
Sa once thought so, especially in the late pregnancy, her feet were swollen like pig's trotters. She really dreamed of unloading the goods every day!
But after it came out, I was so angry that my eyes turned helpless and foamed at the mouth so tired that I would have another idea, that is:
would be great if it could be stuffed back into my stomach!
So, cherish this time when the kid stays in his stomach honestly. After passing this village, there is no such store!
End
#I want to go to the headlines##Qingfeng Plan#
and non-invasive DNA are like a more high-end custom dress, using more advanced fabrics, better cutting methods, and more reasonable styles. Of course, it also requires a higher price. You can wear it not only as a piece of clothing that can cover your body, but also participate in some important occasions to highlight your personal style.
In normal life, a simple and generous life outfit can meet the requirements of most of us, but if you have no problem with your financial ability and want to be prepared for any trouble, you can also get both of them.
If you are a pregnant mother without any high-risk factors, that is, you are not an elderly pregnant woman, and the couple has normal chromosomes and have not given birth to a fetus with chromosome abnormalities, you do not need to consider prenatal diagnosis when you come up. We only need routine screening and can choose any of the above two methods.
may also be given priority for Down's screening. If you find or suspect a problem, or feel that you are not at ease, you can further perform non-invasive DNA testing.
For many regions, the free popularization of Down's screening has been achieved. Sister Sa's suggestion is:
Don't think that free is not good, of course you have to do it.
is not just because it is free, and it is not done in vain, but because Sister Sa mentioned just now:
Down's screening includes screening for congenital neural tube defects, and non-invasive DNA does not include this item.
If you accidentally missed the Down screen for some reason, , then you can hurry up and perform non-invasive DNA remedies before the gestational week has exceeded 26 weeks.
If you choose to do non-invasive from the beginning, then remember that non-invasiveness does not screen for neural tube defects, so it is best to do a systematic ultrasound examination after 16 weeks of pregnancy, focusing on eliminating fetal neural tube malformation , which is what the teacher told us when we were in school.
If Down's screening is found to have high risks and is worried that prenatal diagnosis will have certain risks, you can consider further screening of non-invasive DNA or prenatal diagnosis.
If you are a high-risk pregnant woman, such as women over 40 years old, women with chromosome problems with couples, women who have had children with chromosome defects, etc., in order to ensure that everything is foolproof, you can also make prenatal diagnosis--- amniotic fluid puncture .
After all, non-invasive DNA still cannot reach 100% accuracy, and there is a risk of missing screening of less than 1%. Therefore, even if we have done non-invasiveness, we must not relax later prenatal examinations, and we must be cautious when treating major ejaculation and other abnormalities. If other ultrasound soft indicators are found, we need to consider whether to undergo prenatal diagnosis at the discretion.
From pregnancy to giving birth, the whole process is like a difficult upgrade to kill monsters, one level after another, one level after another, allowing you to pass this level and the next level.
And these prenatal examination methods are all to help us pass the clearance smoothly and to protect us.
When the baby is in the belly, we will look forward to the baby coming out every day, and feel that the old mother will feel at ease when she comes out!
Sa once thought so, especially in the late pregnancy, her feet were swollen like pig's trotters. She really dreamed of unloading the goods every day!
But after it came out, I was so angry that my eyes turned helpless and foamed at the mouth so tired that I would have another idea, that is:
would be great if it could be stuffed back into my stomach!
So, cherish this time when the kid stays in his stomach honestly. After passing this village, there is no such store!
End
#I want to go to the headlines##Qingfeng Plan#
