What are the chances of having twins (one boy and one girl) through in vitro fertilization?

The probability of having twins with a boy and a girl for in vitro fertilization is approximately 20% to 25%, and the younger the patient is, the higher the probability of having twins. Generally, in vitro fertilization is only recommended for patients with severe damage to both fallopian tubes. In such cases, two embryos are usually transplanted, and based on the survival of the embryos, there may be three outcomes: dizygotic twins, singleton pregnancy, and monozygotic twins. No matter which situation occurs, the health of the baby is the most important.

What is the probability of twins through in vitro fertilization? To achieve twins through in vitro fertilization, 1 to 2 additional embryos may be transplanted during the embryo transfer. Among successful cases of in vitro fertilization, the probability of having twins with a boy and a girl is approximately 20% to 25%. For younger patients, the probability is 70% to 80%, while for older patients, it is 30% to 40%. For experts with excellent skills, even higher probabilities can be achieved. After transplanting two embryos, the following three outcomes may occur:

Two embryos are transplanted, and both embryos successfully implant. This is the most ideal situation after transplantation, but it has extremely high requirements for uterine environment and embryo quality.

Two embryos are transplanted, one of which has lower potential and fails to implant, while the other with better potential successfully implants.

Two embryos are transplanted, one of which has lower potential and stops developing, while the other with excellent potential splits into two embryos and successfully implants.