Through a biopsy it is possible to obtain some cells from the embryos (blastocysts) which can be analyzed to evaluate their genetic characteristics. PGT-A (PGT for aneuploidies) is the most commonly used procedure and allows you to verify the presence of the correct number of chromosomes in the embryo. Any alterations (aneuploidy) are associated with a reduction or absence of PMA success.
PGT-A allows you to select embryos with greater chances of implantation and pregnancy, thus making PMA more efficient, but it is not a prenatal analysis to evaluate the health of the unborn child.