Although prolonged culture up to the blastocyst stage offers many advantages, such as better embryo selection, it also has some limitations.
There are embryos that do not reach the desired blastocyst stage, but stop developing for whatever reason. This leads to having to cancel the transfer if no embryos are available.
In addition, the quality of the laboratory is critical to the success of fertility treatments. Not all laboratories have the same results when taking embryos up to day 5 of development.
Finally, long embryo culture requires a large number of eggs and embryos to be available for any embryos to be transferred.
Read the full article on: What is long embryo culture and blastocyst grading? ( 36).
By Alicia Francos Pérez M.D., M.Sc. (gynecologist), Carolina Andrés Santé B.Sc., M.Sc. (embryologist), Cristina Duque Royo M.Sc., Ph.D. (senior clinical embryologist), José Luis de Pablo B.Sc., M.Sc., Ph.D. (senior clinical embryologist), Laura Molina Sotomayor (embryologist), Leonor Ortega López B.Sc., M.Sc. (embryologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Miguel Angel Checa Vizcaino M.D., Ph.D. (gynecologist), Rebeca Reus BSc, MSc (embryologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 06/28/2023
