Preimplantation Genetic Diagnosis & Screening
Preimplantation Genetic Diagnosis (PGD) is a procedure used during in vitro fertilization (IVF) to test embryos for genetic disorders before implantation. PGD helps identify embryos that may carry inherited genetic conditions, allowing only healthy embryos to be selected for transfer into the uterus.
The process involves taking a small sample of cells from the embryo (usually on day 3 or 5 of development) and testing for specific genetic conditions. PGD can be used to screen for a variety of genetic disorders, including cystic fibrosis, sickle cell anemia, and Down syndrome, increasing the chances of a healthy pregnancy.
The success rate of PGD (Preimplantation Genetic Diagnosis) is directly related to the number of embryos transferred. At Point, we approach this process with the utmost care, as both our egg donors and surrogates are rigorously selected. This method also facilitates sex selection. PGD boasts an accuracy rate of 90%, with the remaining 10% resulting in false positives or negatives, or cases where no result is obtained.
There is also the possibility of mosaicism, where cells from the same individual may have different genetic compositions. Although cells from a single fertilized egg should typically have the same chromosomal structure, some rare cases present with abnormal chromosome counts, which can lead to a misdiagnosis.
