I was pregnant for 12 weeks at the age of 19, and my 50 -year -old boyfriend did not admit that the child was him. I doubt that I was innocent. What should I do?

[Fan Laixun] I am studying at the age of 19 years at the age of 19, and I have a relationship with a 50 -year -old man and lived together.One morning, I found that I was pregnant again.When I told him the news, he not only did not admit that the child was him, but also accused me of other men. It was said that the child might be someone else. The doctor also said that if I shed it, there was no chance to get pregnant.I have been pregnant for 12 weeks now. Can I do a parent -child identification now to make that man responsible?

[Doctor answered] Parent -child identification in 12 weeks of pregnancy has always been a highly concerned topic.Parent -child identification is a way to determine parent -child relationships by comparing the DNA information of parents and children.Especially in some legal proceedings, disputes or private relationships involving parent -child relationships, parent -child appraisal has become one of the important evidence.With the development of technology, more and more people are paying attention to whether parent -child identification can be performed in the early stages of pregnancy.

1. The scientific principle of parent -child identification in 12 weeks of pregnancy

First of all, you need to understand the scientific principles of parent -child identification.Parent -child identification is to determine the parent -child relationship between the two people by comparing the genome of DNA.In DNA, there is a phenomenon called "DNA polymorphism".In other words, it is also DNA, but everyone’s DNA sequence is different, and there are differences between different people.This difference is called gene polymorphism.Gene polymorphism can be used to compare parent -child relationships.Generally speaking, the closer the parent -child relationship, the more similar genes are.

In parent -child appraisal, the DNA samples of parents and children need to be extracted, and then compare the genetically polymorphism through technical means such as PCR amplification, electrophoresis, and nucleic acid hybridization.The parent -child relationship is then determined by calculating gene similarity.

2. The actual operation of parent -child identification in 12 weeks of pregnancy

For 12 weeks of pregnancy, the actual operations that need to be performed include: collecting blood samples of pregnant women, collecting father’s oral mucosa swabs, collecting fetal DNA samples, PCR amplification, electrophoresis, and nucleic acid hybridization.

The blood sample of pregnant women can be performed by collecting venous blood, maternal plasma, and mother serum.Collecting the father’s oral mucosa swab is to obtain DNA samples from the oral mucosal cells.To collect fetal DNA samples, it is necessary to pass the shellacal puncture or fleece sampling.These methods need to be carried out in the hospital, and professional technicians need to be operated.

For steps such as PCR amplification, electrophoresis, nucleic acid hybridization, etc., professional laboratories are required.Under normal circumstances, these operations take a longer time, and usually take 1-2 weeks to get results.

3. The technical method of parent -child identification in 12 weeks of pregnancy

In the process of parent -child appraisal 12 weeks of pregnancy, there are two main technical methods: non -invasive parent -child appraisal and intrusion parent -child identification of sexual prenatal parent -child appraisal.

1. Non -invasive prenatal parent -child identification

This is also known as an unparalleled parent -child appraisal. It is a new way of appraisal, mainly for parent -child identification through fetal DNA.This technical method does not need to collect fetal DNA through amniotic stabbing or sampling sampling, so it is safer to pregnant women and fetuses.

The main principle of non -invasive parent -child appraisal is that there are DNA fragments in the fetus in the blood of pregnant women.By amplifying the DNA in the blood of pregnant women, and then comparing the DNA sequence, you can determine the parent -child relationship between the fetus and the parents.However, it should be noted that this technical method can only be carried out after 10 weeks after pregnancy, and professional laboratories and equipment are required to operate.For example, the accuracy of non -invasive prenatal parent -child identification is relatively low, usually about 99%.

2. Invasive prenatal parent -child identification

Invasive prenatal parent -child identification is a more traditional technical method. The purpose of collecting fetal DNA through amniocentesis and other methods to test the fetal DNA and so as to be a parent -child identification.This technology has an advantage, that is, the accuracy is high, which can reach more than 99.9%.However, it should be noted that there are certain risks in this technical method, which may lead to adverse consequences such as abortion and fetal malformations, so it is necessary to be particularly cautious.

Fourth, 12 weeks of pregnancy, parent -child identification need to pay attention

Although parent -child identification can be performed in scientific principles, practical operations and technical methods, there are some issues that need attention in the actual operation process.

1. Risk issue

Whether it is an invasive parent -child appraisal or non -invasive parent -child appraisal, there are certain risk problems.Before the parent -child identification, you need to fully understand the relevant risks and take the necessary security measures.

2. Legal issues

Before we conduct parent -child identification, we are very important for relevant laws and regulations and regulations, and operations must be guaranteed to be legally compliant.In some countries or regions, parent -child identification needs to be legal procedures and supervision, otherwise it may be punished.You need to understand the relevant laws and regulations in advance to avoid legal issues.

3. Privacy issues

Parent -child identification involves personal privacy issues, so it is necessary to protect personal privacy.Before the parent -child identification, it is necessary to communicate with the relevant personnel. It is clear that the reasons and purpose of parent -child identification must be made to ensure that the operational process is legally compliant, and the privacy of the relevant personnel is protected.

4. Psychological problems

Parent -child identification may affect the psychological psychology of relevant personnel, especially when determining the child’s biological parents.Before the parent -child identification, it is necessary to consider the psychological tolerance of relevant personnel and give certain psychological support and help.

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