When an individual person or couple undergoes in vitro fertilization (IVF), the woman is given ovulation induction medications with the purpose of obtaining an increased number of eggs, thereby allowing a greater number of embryos to be created. Thanks to it, we can widen the number of available options when it comes to selecting the best embryo for the transfer.
Cypriot law allows transferring up to 2 embryos in women under 39 years of age, and up to 3 if she is aged between 39 and 50 years. Thus, the amount of spare embryos after an IVF treatment is a variable one.
A couple may wish to preserve these embryos for later use either because the first IVF attempt has not lead them to achieve pregnancy, or because they want to have another child. In this case, cryopreservation will be the option of choice.
On the other hand, if the couple do not wish to store these embryos for later use or if they have surpassed the maximum period of time established by law during which embryos can remain frozen in accordance with the law, they must choose a fate for these supernumerary embryos:
- Donating them to other couples
- Destroying them
- Donating them for research
According to Cypriot law, the maximum period of time during which embryos can be stored is 10 years. However, such period can be extended upon written request.
Donor eggs and sperm
In addition to using the spare embryos of another couple’s IVF cycle, Cypriot law envisages another type of embryo donation. In such case, by donated embryos we understand the performance of an IVF cycle using the embryos obtained by fusing donor eggs and sperm.
This alternative usually allows us to achieve higher success rates, as both the eggs and the sperm have been collected from young, healthy donors.
In this sense, it is possible that this leads to a misunderstanding, as in other countries such as Spain, one can distinguish between embryo donation and double-donor IVF, while in Cyprus both options are referred to as embryo donation by Cypriot fertility centers.
Treatment for the recipient of donated embryos
Regardless of whether the embryos have been created using donated eggs and sperm, or they are the surplus embryos after another couple’s reproductive cycle, the treatment for the recipient is the same.
- Endometrial thickness of 7-10 mm
- Triple line pattern of the endometrium
To that end, recipients are prescribed stimulation of ovarian function medications either by oral, vaginal, or patch route. As she takes these medications, the doctor will carry out various ultrasound scans in order to monitor endometrial development. Thus, the embryo transfer will be scheduled according to the woman’s ovulation cycle.
In cases of foreign patients, they can start taking fertility medications from their country of origin, and visiting the clinic in Cyprus just for the embryo transfer. This option will depend on the criteria established by each center and medical specialist.