Process of IVF
Assisted pregnancy test tube baby is a kind of assisted reproductive technology, which is suitable for couples who cannot conceive naturally. The process of IVF technology usually includes the following steps: selection of donated eggs or sperm, in vitro fertilization, embryo culture and selection, and embryo transfer under decidua.

1. Select donated eggs or sperm
The process of IVF assisted pregnancy first needs to select donated eggs or sperm. Some couples may be unable to use their own eggs or sperm due to reproductive organs, chromosome abnormalities and other reasons, so they need the donor's eggs or sperm. In some professional reproductive hospitals, there is a special donor database, which can select suitable donors according to the requirements of couples. The doctor will conduct detailed physical examination to ensure that the quality of the donor's eggs or sperm meets the requirements.
After the donor is selected, the doctor will help the woman with ovulation treatment to promote the production of eggs. At the same time, the man needs to provide semen samples for in vitro fertilization.
2. In vitro fertilization
In vitro fertilization is one of the core steps of IVF. In the process of in vitro fertilization, the doctor will put the donated eggs and sperm into the culture dish for fertilization. In some cases, if the patient's semen quality is poor, single sperm injection technology can be used, that is, single sperm is injected into the egg to improve the fertilization rate.
3. Embryo culture and selection
The fertilized egg will be further cultured until it develops into a blastocyst. During the culture, the doctor will observe the quality of the blastocyst and select the best embryo. This can improve the implantation rate and the probability of successful pregnancy.
Some couples may choose to carry out embryo gene testing to screen genetic diseases such as chromosome abnormalities, so as to select healthy embryos for transplantation.
4. Subdecidual embryo transfer
After embryo culture and selection, the doctor will choose the right time to transfer the embryo into the woman's uterus. This process is usually painless, and the doctor will use a soft catheter to place the embryo under the decidua of the uterus. After transplantation, patients need to pay attention to rest and avoid strenuous activities, and maintain a good attitude.
Within two weeks after the embryo transfer, the patient can conduct a pregnancy test to confirm whether the pregnancy is successful. If the pregnancy is successful, the patient still needs further progesterone treatment to ensure embryo safety.
Time of IVF
The time of IVF pregnancy aid varies according to individual differences and specific circumstances, but generally speaking, it takes about 2-3 months from the beginning to successful pregnancy. The specific time includes donor selection, ovulation treatment, in vitro fertilization, embryo culture and selection, embryo transfer and other processes.
In the whole process, the most time-consuming stage is embryo culture and selection, which usually takes 5-6 days. It should be noted that IVF assisted pregnancy is not a one-time successful technology, and some couples may need to try several times to get pregnant successfully.
summary
Assisted pregnancy test tube baby is an assisted reproductive technology, which helps couples who cannot conceive naturally by selecting donated eggs or sperm, in vitro fertilization, embryo culture and selection, and embryo transfer under decidua. The whole process usually takes 2-3 months, and the embryo culture and selection phase is the most time-consuming. IVF assisted pregnancy has enabled many couples to realize their dream of becoming parents, but they also need to clearly understand the details and risks of the whole process and seek guidance and support from professional doctors.