At CRGH we perform embryo transfers at the blastocyst stage. Blastocysts form on day 5 or 6 of embryo development (6 or 7 days post egg collection) and are characterised by a fluid filled cavity where cells have differentiated into either the trophectoderm or inner cell mass. Transfer at the blastocyst stage mimics the natural environment more closely and allows an enhanced selection of embryos translating into a higher chance of pregnancy than transfer of day-3 embryos.
In 2018-2019, 88% of all fresh embryo transfers at CRGH were at the blastocyst stage and we achieved a 60.0% pregnancy rate per embryo transfer across all age groups. The live birth rate was 46.0% per blastocyst transfer.
If you would like to book an appointment with one of our doctors you can: