Applicable population of IVF
IVF is an assisted reproductive technology, which is applicable to the following groups:

First, infertile couples. For those couples who have not been pregnant naturally for a period of time, IVF is an effective solution. Common causes of infertility include abnormal ovarian function in women, low sperm quality in men or blockage of fallopian tubes. IVF technology can help these couples achieve their reproductive aspirations through in vitro fertilization and embryo transfer.
Second, couples with genetic defects. Some couples with genetic diseases in their families hope to avoid passing on genetic diseases to the next generation through IVF technology. IVF technology can conduct embryonic genetic analysis in the process of IVF to screen embryos with genetic problems, and select healthy embryos for transplantation, thus reducing the risk of disease in the next generation.
Third, older female couples. Women's fertility will decline with age, and the success rate of pregnancy for women over 40 years old is very low. IVF technology can provide an option for older women to still have the opportunity to realize their reproductive dreams. Successful pregnancy rate can be improved through in vitro fertilization and embryo transfer.
Successful cases of IVF
Since the birth of IVF technology in 1978, it has helped thousands of families realize their dreams of childbearing. Here are some examples of successful cases.
First, Louis Brown. She was the first baby born through in vitro fertilization in the world, born in 1978. This successful case represents a breakthrough in IVF technology and brings hope to other infertile couples.
Second, Emma Weber. She was the first test tube baby born through embryo transfer in the world, born in 1971. This milestone proved the viability of embryos in vitro, laying the foundation for the future development of IVF technology.
Third, the Venter family. This family is the first in Britain to have quadruplets through IVF technology. They were born in 1990. The successful IVF case has brought hope to more families.
These successful cases show that IVF technology can achieve good results in different situations, and provide a way for infertile couples to achieve their reproductive aspirations.
Summary
Through the above introduction, we can draw the following conclusions:
Test tube baby technology is applicable to infertile couples, couples with genetic defects, and couples with older women.
IVF technology has achieved many successful cases, including the birth of Louis Brown, the world's first IVF baby, and Emma Weber, the world's first IVF baby born through embryo transfer.
In conclusion, IVF technology provides an effective reproductive choice for couples who cannot conceive naturally or want to avoid genetic diseases, and also brings new hope to older women. The successful cases of IVF technology have further strengthened people's confidence and expectations for this technology.