Increases the chances of success in Assisted Reproduction
Blastocyst culture is part of the work carried out by the embryology laboratory as part of an IVF treatment. Its aim is to observe embryo development to a more advanced stage and to help the medical and embryology teams make decisions regarding embryo transfer, vitrification or the need for additional tests.
Not all embryos reach the blastocyst stage, and this outcome depends on the quality of the eggs and sperm, the patient’s age, the number of embryos available and the development of each individual case. Therefore, the decision to extend embryo culture should be made on an individual basis.
The blastocyst is an advanced phase of the embryo, in which the following are already distinguished:
Inner cell mass, which will develop into the baby.
Trophectoderm, which will form the placenta.
Blastocoel cavity, which indicates proper development.
Reaching this stage indicates that the embryo has a high implantation capacity.
Prolonged culture can be especially beneficial in:
in the laboratory via IVF or ICSI.
in next-generation incubators, with controlled temperature, humidity, and gas levels.
by embryologists, observing cell division and morphology.
of the highest quality for uterine transfer or vitrification.
For this reason, the decision to extend culture must be personalized and made together with the specialist.
Transfer at the blastocyst stage tends to offer higher pregnancy rates than transfer on day 2-3, especially in younger women or those with several embryos available.
Specific rates depend on age, egg quality, and reproductive history.
No, only those with greater development capacity.
It usually has an additional cost, as it requires more days of laboratory work and specialized control.
Yes, blastocysts can be vitrified with high survival rates.
On the contrary, it allows the transfer of a single, top-quality embryo, thus reducing the risk of multiple pregnancy.
The assessment depends on embryo quality and the clinical context. Some embryos reach the blastocyst stage on day 5, while others do so on day 6. The embryology team assesses development together with other factors before recommending embryo transfer or vitrification.
No. Blastocyst transfer may improve embryo selection in some cases, but it does not guarantee pregnancy. The outcome also depends on factors such as age, embryo quality, the endometrium, the cause of infertility and other medical factors.
A day 5 blastocyst is an embryo that has reached an advanced stage of development five days after fertilisation. At this stage, structures such as the inner cell mass and trophectoderm can be assessed, helping the embryologist evaluate its development.
At Institut Marquès, we have specialized embryologists and the most advanced technology to perform blastocyst culture under optimal conditions.
Our goal is to maximize the chances of success in every assisted reproduction treatment.
Request your first free consultation and find out whether blastocyst culture is the best option for your case.
