Preimplantation genetic screening (PGS) involves screening of embryos for chromosomal abnormalities. This avoids the abnormal embryos that transferred to the uterus during IVF or ICSI.

Preimplantation genetic diagnosis (PGD) is a procedure used prior to implantation to identify specific genetic defects within embryos.  This diagnosis is used to prevent genetic diseases/disorders that passes to the child.

Who needs PGS / PGD?