How Do Doctors Select Embryos in Mexico Surrogacy at COSTA HEALTH?

Before deciding to become a gestational carrier, many women carefully learn about the medical examinations they will undergo, the precautions to take during pregnancy, and what they will need to do throughout the Mexico surrogacy process. There is another medical aspect that is equally worth understanding: How is the embryo that will eventually be transferred into your uterus formed? And based on what criteria do doctors select the embryo to be transferred from multiple embryos?

How Does an Embryo Develop Step by Step?

In Mexico surrogacy, embryos typically need to go through stages such as in vitro fertilization and embryo culture before entering the subsequent transfer process.

First, doctors obtain eggs according to the treatment plan and fertilize them with sperm. Once fertilization is successful, the resulting embryos continue to be cultured in the laboratory.

An embryo initially begins dividing from a fertilized egg. As the cells continue to divide and develop, the embryo gradually forms a morula and then develops into a blastocyst. Once it reaches the blastocyst stage, its development can be assessed more clearly, and the laboratory can conduct further evaluation based on its morphology and developmental performance.

Why Do Doctors Evaluate Embryo Development?

During embryo culture, the embryology laboratory continuously monitors embryo development.

After an embryo reaches the blastocyst stage, doctors and embryologists typically evaluate the degree of blastocyst expansion, as well as the morphology of the inner cell mass and trophectoderm cells. Different embryos may develop at different rates and show different morphological characteristics, so doctors will grade and rank them based on the laboratory evaluation results.

Embryo grading is not simply an “exam score.” It mainly reflects the embryo’s morphology and developmental performance during culture and is one of the important references doctors use when selecting embryos.

Embryos May Also Undergo IVF-PGT, Commonly Known as “Third-Generation IVF”

After embryos reach the appropriate stage of development, genetic testing can be performed to obtain additional information about factors such as the embryo’s chromosomes.

If multiple embryos have completed the relevant testing, doctors can consider the IVF-PGT results together with embryo morphology, developmental performance, and other factors when developing the embryo transfer plan.

When selecting embryos, doctors generally consider information such as the embryo’s developmental stage, morphology, culture performance, and IVF-PGT testing results, rather than making a decision based solely on appearance. For gestational carriers participating in Mexico surrogacy, it is more important to understand their own physical condition, the embryo transfer process, and the medical support available throughout the pregnancy.

COSTA HEALTH focuses on the medical safety and personal rights of gestational carriers throughout the surrogacy process, hoping that every woman considering becoming a gestational carrier can make her own decision based on a full understanding of the relevant information. If you are willing to use your own body to help a family welcome a child, you can start by learning about the complete Mexico surrogacy process and the responsibilities involved in becoming a gestational carrier. Becoming a gestational carrier is a decision that requires careful consideration, as well as an experience that requires professional support throughout the journey.