With the passing of Act 45/2003, research with viable human embryos became legal in Spain. Since then, Institut Universitari Dexeus has been in contact with couples whose embryos had been frozen for more than 2 years to inform them about the new legal options and gather their opinions. A reply was received from 35.9% of the couples contacted, with the following results: 33.3% wished to preserve the embryos for their own use, 30.0% wished to donate the embryos for embryonic stem cell research, 20.2% wished to donate the embryos to third parties for reproductive purposes and 10.3% wished to terminate the cryopreservation process without further use. The couples who chose to donate the embryos for research were asked to give written informed consent to the donation of their embryos for a specific project. The possibility of donating embryos for research has been well received by the couples, and offers a solution to those who wish to make neither a further attempt for pregnancy nor a donation with reproductive goals. Donation for research purposes is considered a preferable alternative to disposal.
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