Why is blastocyst culture used in IVF?

Blastocyst culture is used in IVF to improve the selection process of embryos for transfer. By allowing embryos to develop longer, embryologists can identify the embryos with the highest chances of successful implantation and pregnancy. Blastocyst culture provides a more accurate assessment of embryo quality, as only the embryos that have reached the blastocyst stage are selected for transfer. This technique increases the success rates of IVF treatments and reduces the chance of multiple pregnancies by transferring a smaller number of high-quality embryos.