What is Preimplantion Genetic Testing (PGD/PGS)?
PGD/PGS is a relatively new procedure in which embryos are tested for certain genetic conditions prior to being replaced in the womb. Couples can benefit when the woman is 35 or older, by testing for age-related chromosomal disorders, also called aneuploidy. Younger women with repeated unexplained miscarriages can also benefit from this test. The purpose is to select and replace only those embryos that appear to be chromosomally normal, so that women may increase the chance of conceiving, while reducing the probability of losing the pregnancy or carrying a chromosomally abnormal baby to term. PGS for aneuploidy can determine the presence or absence of a certain number of chromosomal disorders, but cannot detect genetic disease nor predict congenital malformation.
