Preimplantation genetic testing for aneuploidy (PGT-A) is a genetic test that can be performed on embryos to identify any with abnormal chromosome numbers (aneuploidy). This test is performed on a developing embryo, prior to the embryo transfer step in IVF treatment, with the goal of improving the likelihood of implantation.
Through a quick, non-invasive biopsy of trophectoderm (TE) cells of a day-five blastocyst, we are able to ensure the exact number and DNA content of each chromosome within each embryo sample. Only TE cells are needed for this test. They are the outer cells that grow to become the placenta. The inner mass cells that grow to become the fetus are not biopsied for PGT-A.
While PGT-A has been shown to improve implantation rates for individuals of any age, it is typically most cost-effective for those who:
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