Elective single embryo transfer is a new technique in which a single embryo is selected from a larger number of available embryos and is placed in the uterus or fallopian tube. The embryo selected might be produced from a previous IVF cycle or from the fresh IVF cycles.
In vitro fertilization (IVF) helps in producing more than one embryo or egg. The remaining embryos that are left out is stored and preserved by a process called cryopreservation. Elective single embryo transfer helps in avoiding risks associated with carrying multiple embryos or resulting in high order multiple births.