Why Does Mexico Surrogacy Mostly Use Single Embryo Transfer?

In modern society, many prospective parents choose Mexico surrogacy to realize their family dreams due to age, career, or health reasons. When they enter the actual process, they often find that the medical team almost always recommends transferring a single embryo. This makes some people wonder: why not transfer two at once to increase the success rate?

Single Embryo Transfer Has Become the Mainstream Practice

Current international mainstream assisted reproduction guidelines all recommend prioritizing single embryo transfer in surrogacy cycles. This practice is not arbitrary but is based on extensive clinical data and long-term follow-up results. In the past, multiple embryo transfer could indeed increase the probability of pregnancy in one cycle, but it also brought higher risks of multiple pregnancies.

Protection of the Surrogate Mother’s Health

The physical condition of the surrogate mother is at the core of the entire process. Multiple pregnancies significantly increase the risk of complications such as gestational hypertension, gestational diabetes, placenta previa, and preterm birth. These issues not only prolong hospitalization but may also affect the surrogate mother’s postpartum recovery. Single embryo transfer reduces the burden on the uterus, makes the pregnancy process smoother, and gives the surrogate mother a better quality of life during pregnancy. This is the first factor the medical team considers, because protecting the surrogate mother’s health means protecting the smooth progress of the entire surrogacy plan.

Practical Significance for the Baby’s Health

The greatest advantage of single embryo transfer is that it can significantly reduce the incidence of preterm birth, low birth weight, and neonatal complications. Twins or multiples face far higher risks after birth than singletons, including respiratory problems and neurodevelopmental delays. Choosing single embryo transfer allows each baby to receive more adequate intrauterine nutrition and development space, thereby improving health at birth. This is also the result prospective parents most hope to see.

Relationship Between Single Embryo Transfer and Success Rate

Modern embryo culture technology and genetic screening have greatly improved the implantation ability of a single embryo. Many blastocysts that have undergone optimized culture and screening already achieve a relatively high success rate with a single transfer. Therefore, the additional increase in success rate from transferring multiple embryos is very limited, yet it multiplies the risks.

When facing the transfer plan, prospective parents can fully communicate with the doctor to understand the specific grading and screening results of each embryo. Single embryo transfer does not mean a lower success rate; instead, it controls risks at the lowest level through a more scientific strategy. Single embryo transfer is the embodiment of prioritizing safety and health in the field of Mexico surrogacy. It allows prospective parents and surrogate mothers to welcome new life with a calmer mindset.

Power Fertility Clinic is a fully licensed reproductive medical institution in Mexico that follows US FDA standards. It is directly operated by a US assisted reproduction service institution and is located in the bustling center of Mexico City, 500 meters from the US Embassy. Power IVF provides comprehensive reproductive medical clinical services. Power IVF covers egg donation, sperm donation, third-party gestation services, as well as egg freezing, IVF, and embryo screening (PGT-A) projects. In Mexico, IVF, gender selection, and third-party gestation are legally open to all families—including single, married, and LGBTQ groups—and regulations support the import of frozen tissues. Power IVF has obtained the relevant license to receive overseas frozen tissues, providing clients with efficient and professional fertility solutions.