When a couple or individual begins the journey of in vitro fertilization (IVF), they do so with a mix of hope, excitement, and often, uncertainty. What they may not expect is that one of the most sensitive decisions comes after the treatment: deciding what to do with the embryos that weren’t transferred.
These surplus embryos—created during a successful IVF cycle—are more than just biological samples in a lab. They are frozen dreams, waiting for a conscious, ethical, and deeply personal decision.
Why are there surplus embryos?
Thanks to advancements in reproductive medicine and embryo selection, it’s now possible to obtain several high-quality embryos in a single IVF cycle. However, the current recommendation in countries like Spain is to perform elective Single Embryo Transfer (eSET) to reduce risks and prioritize healthy pregnancies. This means unused embryos are cryopreserved for potential future use.
What comes next?
This is where one of the most delicate decisions arises. Should they be saved for a future attempt? Donated to another couple? Contributed to science? Or allowed to complete their cycle of life?
In Spain, Law 14/2006 on Assisted Reproduction Techniques outlines several options. Each requires the patient’s informed consent and is regulated to ensure ethical and respectful treatment of the embryos.
What are the options for cryopreserved embryos?
🔹 Future use by the same woman or couple
A common choice is to preserve embryos for future treatments or to expand the family later on. This option requires that clinical and age criteria are still met at the time of reuse.
🔹 Donation to other couples
An act of profound generosity and anonymity. Donating embryos to others who cannot conceive with their own gametes can give them the chance to become parents.
🔹 Donation for scientific research
Some choose to support scientific progress, always under strict ethical regulations. Research projects must be approved by ethics committees and adhere to legal and moral standards.
🔹 Cessation of preservation (destruction)
Perhaps the most difficult decision: allowing embryos to reach the end of their cycle without being used. This option is also legally regulated and must be approached with full awareness.
Making the decision
We understand these are not easy decisions. That’s why at REPROCopilot – AI Expert Agent in Infertility, we help clinics and patients navigate this complexity with advanced technology designed to humanize care and enhance clarity:
✨ Cuida tu embrión: our automated cryo-management platform reduces administrative burden, improves communication, and supports patients in making sensitive decisions—preventing abandonment or oversight.
✨ Autoanamnesis and smart patient acquisition: technology with a soul, enhancing efficiency and personalizing care, so professionals can focus on what matters most: listening, guiding, and connecting.
Because behind every embryo, there’s a story that deserves respect, clarity, and compassionate guidance.
At ReproCopilot, we care for the invisible and support the impossible.
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