What are the chances of twins in test tube babies?

The chances of having twins with in vitro fertilization (IVF) treatment are typically higher than those of spontaneous twinning in the general population. This is because IVF often involves techniques such as multiple embryo transfers, which increase the likelihood of multiple implantations and thus the possibility of twins.

The exact probability of twins with IVF depends on various factors, such as the number of embryos transferred, the woman's age, and her medical history. On average, the chances of twins with IVF range between 10% to 20%, although some studies report rates as high as 30% to 40%.

It's worth noting that while the chances of twins are increased with IVF, the occurrence of higher-order multiple pregnancies, such as triplets or quadruplets, is generally lower with IVF compared to the spontaneous conception of multiple births.

To determine the specific probability of twins for a particular individual, it is recommended to consult with an IVF specialist who can assess factors specific to the woman and provide a more personalized estimate.