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PGS – Preimplantation Genetic Diagnosis by aCGH

What is Preimplantation genetic screening (PGS)?

PGS (Preimplantation genetic screening) tests provide an opportunity to perform screening of all chromosomes of the embryo (chromosome count, the most common aneuploidies) before it is placed into uterus of the woman. It gives an opportunity to the couples to choose an embryo for transfer without chromosome aberations. The test is recommended for couples who have had cases of repeated miscarriages with unknown cause as well as for those who had a baby born with chromosomal pathologies (Down Syndrome). Results of previous tests are issued within two weeks period.

For the best performance of this test embryos of the top quality are selected for the day of biopsy. Each selected embryo is getting marked. Genetic analysis is performed with the help of aCGH (array Comparable Genomic Hybridization) test. After the biopsy procedure the embryos get frozen, the next cycle when the results of genetic tests are issues, it is possible to select embryos without chromosomal abirations and transfer them into the uterine cavity.


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