FAQ. Preimplantation Genetic Testing
How safe is Preimplantation Genetic Testing?
There is no evidence that children born after preimplantation genetic testing suffer from any health or developmental problems. Experts say that embryo biopsy does not affect the health of babies conceived from tested embryos. Hence, such testing is a safe option.
Can PGS be used for selecting the baby’s sex?
Preimplantation genetic screening is one of the techniques used to detect the embryo’s sex because PGS also analyses the Y and X chromosomes. This can be done with 100% accuracy. It can be of benefit to couples who want to balance out their family and to use modern technologies to choose the embryos of a specific sex for transfer. This way they will ensure they will conceive a child of the desired sex. Their motivation can be non-medical, that is family balancing. Another reason to choose the baby’s sex are sex-linked genetic diseases. For example, muscular dystrophy which is a gender-specific disease that only affects boys. In this case, sex selection can be recommended by the doctor as this is a clear medical indication to opt for a specific sex.
What is the process of PGD?
PGD includes removing a few cells that will form a placenta from a day 5 embryo. Such procedure, called trophectoderm biopsy, is not harmful to the embryo. The embryologists test the cells to detect if they contain any genetic abnormalities. The embryos that do not possess the specific genetic condition will be selected as suitable for transferring into the patient's uterus.
How many days should I wait to get the results of PGD/PGS?/h4>
It usually takes 5-10 days for test results to arrive. The embryo(s) with the best genetic makeup are selected for embryo transfer.