Whenever a couple or individual turns to assisted reproduction techniques to achieve a pregnancy, there is a multidisciplinary team working from different fields to make it possible. Embryology specialists are professionals specialized in human reproductive biology who work in the laboratory manipulating gametes (eggs and sperm) and embryos in their earliest stages of development.
Their work requires advanced knowledge in biology, genetics, biochemistry, and laboratory techniques, as well as great precision and responsibility, since they work on the cells that may give rise to a new life.
To become an embryologist, it is necessary to complete university training in health sciences or biological sciences, such as Biology, Biochemistry, or Pharmacy, and then specialize through master’s degrees or specific courses in embryology and assisted reproduction. Additionally, practical experience in specialized laboratories is essential to acquire the skills and handling of the most advanced technologies.

Dr. Llanos Medrano, National Laboratory Director of IVF-Life and embryologist, states that "the work of the embryologist is a delicate balance between science, technique, and sensitivity, because we work with embryos at their earliest moments with the utmost precision to offer the highest chances of success in the treatment."
One of the main functions of the embryology team is the processing and preparation of gametes, where the careful selection of eggs and sperm of the highest quality is essential. "Each semen sample is carefully evaluated and treated to guarantee the optimal conditions that will allow successful fertilization," explains Dr. Medrano.
Next, these specialists carry out fertilization in the laboratory using techniques such as in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI), processes requiring meticulous skill and the use of high-precision microscopes to handle cells with extreme care.
Once fertilization has occurred, the embryologist closely monitors embryonic development. This involves rigorous tracking of embryo growth and evolution to identify those with the highest implantation potential and healthy development.
Based on morphological criteria and development timing, embryologists select the embryo to be transferred to the patient’s uterus. In some cases, they also perform preimplantation genetic diagnosis (PGD) to ensure that embryos do not present genetic abnormalities that could affect treatment success.
Another key function is vitrification or cryopreservation of embryos, eggs, and sperm. Thanks to this technique, these gametes and embryos can be preserved under optimal conditions for future assisted reproduction cycles, significantly expanding options for patients. Additionally, embryologists are responsible for quality control within the laboratory, overseeing the proper functioning of all equipment and systems, from incubators to micromanipulators.

This work is essential for maintaining ISO and UNE certificates that endorse centers like IVF-Life as spaces of excellence in assisted reproduction, as well as ensuring compliance with standards required by authorized public bodies.
Finally, research is an integral part of these professionals' work. At IVF-Life, embryologists actively participate in projects aimed at improving assisted reproduction techniques and developing new technologies that increase the success rate and safety of treatments.
"Being an embryologist means being at the forefront of science, but also accompanying each patient on their journey toward motherhood. For us, every achievement in the laboratory represents a new opportunity to fulfill a dream," concludes Dr. Llanos Medrano.