The more you know about the health of an embryo prior to implantation the better the odds of a successful pregnancy. Advances and innovations in the preimplantation genetic testing field have significantly impacted transfer and subsequent live birth rates. The decision to use preimplantation genetic testing of any kind is up to you. The tests are not cheap, however the information they provide can have a significant impact on the success of your transfer.
Deciphering Genetic Test
PGD (Preimplantation genetic diagnosis): testing for a single gene defect such as Tay-Sachs, cystic fibrosis, etc. The acronym PGD has become a blanket term for any type of chromosomal testing.
PGS (Preimplantation genetic screening): PGS, or aneuploidy screening, goes one step further than PGD and assesses embryos for chromosomal abnormalities.
CCS (Comprehensive Chromosome Screening): A subset of PGS, CCS is the newest and more comprehensive chromosomal test around. CCS is performed on Day 5 at blastocyst stage when multiple cells (about 5-10) have developed making it possible to evaluate all 23 chromosomes.