Prolonged cultivation allows to optimize the most suitable time for embryo transfer.
Prolonged cultivation is a lab technique where embryos are grown for more than 72 hours. We often let embryos grow for 4-5 days, ideally until they reach the blastocyst stage. By day five, we can assess the embryo's development and its embryonic layers. Prolonged cultivation increases the chance of pregnancy.
Laboratory methods
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Assisted Reproduction