Understanding the Embryo Transfer in Surrogacy

Embarking on the surrogacy journey is an exciting step toward parenthood. As intended parents, you may have heard about the critical stage of “surrogacy embryo transfer.” This milestone brings you closer to your dream of parenthood.
In this article, we will delve into the embryo transfer process in surrogacy, offering insights into its success rates and what to expect.

Embryo Transfer Process

An embryo transfer procedure is the process of taking a fertilized egg and implanting it into a woman’s uterus. The embryo transfer procedure is the last step in the in vitro fertilization process.

Let’s break down the process step by step:

  1. Embryo Creation: Embryos are created through IVF. Eggs from the intended mother or an egg donor are fertilized with sperm from the intended father or a sperm donor.
  2. Embryo Selection: Embryos are then carefully monitored in a laboratory. Once they have developed, the fertility specialist evaluates their quality to determine which one(s) will be transferred into the surrogate’s uterus.
  3. Synchronization: Achieving perfect synchronization between the surrogate’s cycle and the embryos’ readiness is essential. This ensures the best possible environment for embryo implantation.
  4. The Embryo Transfer: The actual embryo transfer is a relatively quick and painless procedure. A specialized catheter is used to place the embryos into the surrogate’s uterus. It’s like planting seeds in fertile soil; the hope is that one of them will grow into a healthy pregnancy.
  5. The Waiting Game: There’s a waiting period after the transfer. Everyone involved anxiously anticipates the results. A blood test, usually about ten to fourteen days later, will determine if there is pregnancy.

Why Intended Parents Turn to Surrogacy Embryo Transfer

Even when you may not know the specific cause of your infertility, a reproductive endocrinologist can help you diagnose the source of infertility and define the best way to increase the chances of a successful pregnancy.

  • Surrogacy and In vitro fertilization is a good option for intended parents who are experiencing or have experienced;
  • Irregular menstrual cycles characterize ovulation disorders, reducing the availability of eggs for fertilization.
  • Blockages or damage in the fallopian tube hinder the egg’s fertilization and its journey into the uterus.
  • Uterine fibroids on the uterus wall can interfere with successful embryo implantation and the expected conception.
  • Tubal ligation.
  • Poor sperm morphology and motility, considering that the male factor commonly causes infertility.
  • Endometriosis occurs when uterine tissue grows outside a woman’s uterus, thus affecting the functionality of the fallopian tubes, the uterus, and the ovaries.

Factors Influencing Embryo Transfer Success

Understanding what factors influence the success rates of surrogacy embryo transfers can help intended parents set realistic expectations.

  • Age of the Egg Provider: The age of the egg donor (either the intended mother or a donor) can impact success. Younger women tend to produce healthier embryos.
  • Embryo Quality: The quality of the embryos plays a critical role. Healthy embryos are more likely to implant successfully. Advanced technologies like preimplantation genetic testing (PGT) can help select the best embryos.
  • Uterine Health: The surrogate’s uterine health is vital. A thorough screening process ensures that she has a receptive and healthy uterus.
  • Medical Expertise: The fertility clinics’ and medical teams’ expertise can make a significant difference. Experienced professionals can optimize the chances of a successful transfer.
  • Lifestyle Factors: Factors like a healthy lifestyle, proper nutrition, and stress management can indirectly impact success rates. While success rates can vary, it’s essential to approach the journey with hope and realistic expectations.

Understanding Success Rates in Embryo Transfers

The success rates for surrogacy embryo transfers can vary based on the factors mentioned above. On average, success rates range from 40% to 60% per transfer, with some clinics achieving even higher rates. It’s essential to work closely with fertility experts who can provide personalized guidance and support throughout the process.

Official Success Statistics: You can check the success rate of US clinics on the Centers for Disease Control and Prevention’s (CDC) website. The CDC’s National ART (Assisted Reproductive Technology) Surveillance System publishes annual reports on the success rates of fertility clinics in the United States. These reports provide valuable information on the effectiveness of fertility treatments, including IVF and surrogacy.


The embryo transfer in surrogacy is a critical step on your path to parenthood. Understanding the process and success factors can help you navigate this exciting journey. Remember that various factors can impact the success rate.

Feel free to explore more about the surrogacy process and success stories in our surrogacy community. Your journey starts here.

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Written by David
I work daily to make surrogacy available to as many intended parents, surrogate mothers and egg donors around the world as possible.

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