PGS (also known as aneuploidy screening) is a treatment add-on. It involves checking the chromosomes of embryos created by in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) for abnormalities. ... During PGS, a single cell or a small number of cells is removed from the embryo.

Thus, choosing embryos selected by PGS with normal chromosomes should increase implantation rate and live-birth rate and reduce miscarriages. ... They found that PGS reduced the rates of pregnancies and live births after IVF in women of AMA.