Can IVF choose twins?

According to the Administrative Measures of Human Assisted Reproductive Technology, in order to improve the success rate of artificial assisted pregnancy, only two embryos can be transplanted in the first cycle before the age of 35, and three embryos can also be transplanted. The transplanted embryos with survival rate of 1 were singletons, and those with survival rate of 2 were twins. If you survive 3, you need to reduce it. The survival of embryos is closely related to your physical condition.

But the risk of multiple pregnancy is much higher than that of single pregnancy.

Female friends who choose to be test-tube twins need to be healthy and meet the requirements of twins. Mothers of twins and multiple births are more likely to have pregnancy syndromes such as diabetes and hypertension during pregnancy, and the probability of postpartum hemorrhage is also higher, and the possibility of premature delivery is also greater. Moreover, having twins will increase the burden on the family and society, so when considering whether to have twins, we need to think rationally. Content from: Peking University twins