Embryo transfer is a part of the assisted reproduction process in which the fertilised embryos are transferred from a laboratory setting to the womb of a woman to create pregnancy. In most cases, multiple eggs are harvested from a woman’s ovaries and are fertilised in a laboratory. Among these, a few high-quality embryos with the best chance of implantation are selected and placed in the woman’s womb. The number of embryos transferred is dependent on age & the guidelines provided by the professional bodies. Some countries also have legislation in place that determines the number of embryos that can be selected. In elective single embryo transfer, only one embryo is transferred.