Impact of double versus single blastocyst biopsy and vitrification on clinical and neonatal outcomes in <scp>PGT</scp> cycles: A systematic review and meta‐analysis of embryo retesting

Decision-making on retesting embryos for PGT should be done with caution, as it might reduce live birth rate in order to obtain the precise genetic diagnosis. Larger and well-designed studies, controlling for the main sources of bias, are still needed in order to improve the quality of the available evidence.