BLASTOCYST: In the past most embryos produced with IVF were transferred on day three of development, known as cleavage stage. When an embryo reaches five days of development it is called a blastocyst. Currently, with advances in understanding of the needs of developing embryos, the ability to produce blastocysts in the laboratory has increased. This extended culture time allows nature to help select those embryos with the highest capacity to produce a pregnancy. Culturing and transferring blastocysts on day five of development allows the transfer of fewer embryos while still maintaining a high pregnancy rate. Normally only two blastocyst stage embryos are transferred, thus reducing the risk of multiple pregnancies not higher than twins.Best Fertility Care Centre, Advanced Fertility Care Centre, Ashwini Hospital Moondrumavadi K.Pudur Madurai-07
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