Success Rates in Surrogacy and What Affects Them

Surrogacy is a complex medical and emotional process that has helped thousands of people around the world achieve their dream of starting a family. And although technological advances and clinical experience have made this path increasingly safe and effective, many people considering this option wonder: What are the success rates for a surrogacy treatment? And what do they really depend on?

In this blog post, we explain in detail what we mean by success in a surrogacy process, what factors directly impact it, and why it’s important to look beyond just a simple percentage.

What Does “Success” in Surrogacy Mean?

When we talk about success in a surrogacy process, we’re referring to the birth of a healthy baby following a medically and legally supported treatment. This final outcome is the result of a series of critical steps, including:

• Selecting high-quality eggs and sperm
• Creating viable embryos through In Vitro Fertilization (IVF)
• Successfully transferring the embryo to a surrogate
• Carrying the pregnancy to term without major complications
• A safe delivery and a healthy baby

Each of these steps has its own success indicators, but the main goal is always the same: helping you build your family.

Average Success Rates in Gestational Surrogacy

In programs with high medical and legal standards—like the ones we offer at Surrogate Mexico in partnership with the Ingenes Institute—gestational surrogacy success rates can exceed 75% per embryo transfer, especially when embryos are previously screened through Preimplantation Genetic Testing (PGT).

This percentage can vary depending on:

• The quality of the eggs (whether from the intended mother or a donor)
• The quality of the sperm
• The health and readiness of the surrogate’s endometrium
• The number of embryos transferred (although single embryo transfer is recommended to avoid multiple pregnancies)
• The age of the gametes used

Factors That Impact Surrogacy Success Rates

1. Age of the Egg Donor or Intended Mother

Age is one of the most significant factors in fertility treatments. When using a woman’s own eggs and she is over 37, the chances of success decrease considerably. That’s why donor eggs from young and healthy women are often recommended.

2. Sperm Quality

Issues with sperm count, mobility, or morphology can also affect the creation of viable embryos. If necessary, advanced sperm selection techniques (such as PICSI) may be used to improve the chances.

3. Preimplantation Genetic Testing (PGT)

Using PGT-A or PGT-M allows us to select genetically healthy embryos, reducing the risk of hereditary diseases and increasing the chances of successful implantation.

4. Physical and Emotional Health of the Surrogate

A surrogate must meet strict health criteria, have had previous uncomplicated pregnancies, and have a stable emotional environment. Her well-being directly impacts the success of the pregnancy.

5. Experience of the Medical Team

Success rates also depend on the fertility clinic and the expertise of the embryologists, gynecologists, and specialists involved. At Surrogate Mexico, we work with the backing of Ingenes, one of the leading fertility institutions in Latin America.

6. Endometrial Preparation

Perfect synchronization between embryo development and the state of the endometrium (uterine lining) is essential. Hormonal treatments are used to prepare the surrogate before the transfer.

Can Surrogacy Success Be Guaranteed?

There is no fertility treatment that offers a 100% guarantee. However, at Surrogate Mexico we offer plans that include unlimited embryo transfers, healthy embryo selection, and the option to change the surrogate if needed—significantly increasing the chances of a successful pregnancy.

We also provide emotional, legal, and medical support at every stage of the process.

Special Cases and Surrogacy as an Alternative

Surrogacy is often the solution for many complex infertility cases, such as:

• Women with no uterus or uterine malformations
• Severe infertility diagnoses
• Women who have had multiple failed IVF attempts
• Cancer patients who have lost the ability to carry a pregnancy
• Single men or same-sex couples who want a child with a genetic link

For all these situations, success rates through surrogacy are much higher than with other conventional fertility treatments.

Other Important Indicators

Beyond pregnancy success rates, there are other key indicators that define the quality of a surrogacy program:

• Legal transparency at every stage
• Ethical criteria in surrogate selection
• Ongoing support
• Flexible plans and refund options
• Successful birth rates and newborn health

Conclusion: Success Is Built Step by Step

Surrogacy is not an easy path, but it can be highly successful when carried out with science, empathy, and professional support. Success rates don’t depend on a single factor but on a comprehensive, personalized approach focused on the well-being of everyone involved.

At Surrogate Mexico, we work every day to ensure your dream of having a child isn’t just a hope—it’s a project backed by experience, technology, and humanity. If you’re considering this alternative, we’re here to support you from the very first step.