The number of embryos to be transferred to a patient does not depend on the technique that has been practiced on the embryo, but on the day it is found, its quality and the intrinsic characteristics of each patient. The performance of a Preimplantation Genetic Diagnosis is associated in most cases with advanced maternal age (screening of aneuploidies) or the presence of serious genetic pathologies (in many cases present in the woman). In both cases, multiple pregnancy is contraindicated.
For all these circumstances, the medical advice is usually the transfer of a single embryo.
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