Embryo selection: How we choose the best embryos to transfer

18th July 2014 in IVF

This information was correct at the time of publishing. It may not reflect our current practices, prices or regulations.

One of the crucial elements which affects IVF success rates is embryo selection. Your eggs are fertilised by your partner’s sperm – or a donor’s – on the day of your egg collection, they are then monitored in our state-of-the-art laboratory for signs of fertilisation.

But how do we know which embryos are likely to implant successfully? Our embryologists are trained to the highest industry standards; but we also use the very latest technology and proven innovations.

Time-lapse EmbryoScope monitoring

Our time-lapse incubators give our team vital details about every stage of your embryos development. They take photos continuously which are merged into video, giving us a complete snapshot of each embryos early growth to ensure all necessary stages for implantation have been completed. This technology is proven to increase IVF success rates. You can choose to have your embryos developed in our EmbryoScope as part of your IVF cycle, and can see your embryos development video for yourself.


All your embryos are placed in a special solution called EmbryoGlue, prior to transfer, at no extra cost to you. EmbryoGlue contains a high level hyaluronan, a natural substance in the body that occurs at the time of implantation in pregnancy. Again studies have shown that EmbryoGlue helps improve the chances of pregnancy following infertility treatment.

Standard incubators

Our standard laboratory incubators are the same ones which the EmbryoScope is based on. If you do not wish to use EmbryoScope as part of your IVF cycle, your embryos will be developed in these. They are state-of-the-art and when combined with the considerable expertise of our embryology team, have resulted in consistent success rates across all age groups of patients.

We will let you know on the day of your embryo transfer how many embryos we have identified as viable for transfer. Any remaining good embryos can be frozen and stored by us, so you can use them in a future frozen embryo cycle.

If you have any questions about our embryo selection processes, please speak to our friendly team on 0161 300 2737.

Last updated: 20th January 2020