How many days can test tube babies?
In vitro fertilization (IVF) is the process of fertilization and culture in laboratory environment. This technology can help couples who face fertility problems achieve their fertility aspirations. Generally speaking, IVF testing is carried out at different stages after fertilization to ensure the health and development of the baby.
1. Fertilization stage
In the first stage of IVF technology, doctors combine female eggs with male sperm in the laboratory to form fertilized eggs. This process usually takes 2-5 days. During this period, the doctor will observe the development of the fertilized egg and carry out necessary tests.
First, the doctor will observe the combination of the fertilized eggs. If the fertilized eggs are successfully combined, further screening of genetic diseases can be carried out. This test can help couples understand whether the fertilized eggs carry disease genes that may be passed on to their offspring.
In addition, doctors can also judge the health of a fertilized egg by detecting its chromosome. The common method is to detect the number of chromosomes to exclude some common chromosomal abnormalities, such as Down syndrome. This can help couples choose healthy embryos for transplantation.
Doctors usually carry out the above tests 5-6 days after the formation of the fertilized egg to ensure the health and development of the embryo.
2. Key stages of embryo
In IVF technology, the fertilized egg will be cultured in the laboratory for several days until it reaches the critical stage of the embryo. This is usually 5-6 days after fertilization. At this stage, the embryo has developed to a certain extent, and doctors can conduct more detailed and accurate detection.
Doctors can detect the chromosome condition of the embryo through embryo sampling. This test is called embryo chromosome karyotype analysis (PGS), which can help couples select embryos with normal chromosomes for transplantation, and improve the health and development success rate of infants.
In addition, doctors can also screen for some genetic diseases at the critical stage of the embryo. For example, if a couple suffers from a common genetic disease, they can conduct corresponding gene testing to determine whether the embryo carries the gene of this disease.
3. Embryo transfer stage
After the embryo culture reaches a critical stage, the doctor will select healthy embryos for transplantation into the female uterus. This process is usually carried out on the third day after fertilization.
Before embryo transfer, the doctor will test the embryo again to ensure that the transferred embryo is healthy and well developed. This usually includes the assessment of the number, appearance and quality of cells in the embryo, as well as the karyotype analysis of chromosomes.
If everything is normal, the doctor will use a thin tube to place the embryo in the uterus to provide the best environment for IVF implantation and development.
4. Summary
Test tube babies produced by in vitro fertilization (IVF) need to be tested at different stages to ensure their health and development. The detection of fertilization stage usually includes the combination of fertilized eggs and chromosome screening, while the detection of key stages of embryos is more detailed and accurate, including chromosome karyotype analysis of embryos and genetic disease screening. Finally, in the embryo transfer stage, the doctor will test the embryo again to ensure that the transferred embryo is healthy and well developed.
In conclusion, IVF testing is an important process, which can help couples choose healthy embryos and improve the health and development success rate of infants. The doctor will determine the time and method of testing according to the specific situation of each couple and the implementation standards of the hospital.
