Similar to standard IVF treatment, eggs are retrieved and fertilised. Five days later at the blastocyst stage, a small number of cells are removed from the growing embryos and NGS is used to check for any significant abnormalities present in the chromosomes. In effect, it scans the DNA packed in the cells’ chromosomes for any abnormalities.
Based on the information gained, it is possible to ensure that only embryos with the correct number of chromosomes are transferred, greatly improving pregnancy rates – by up to 68%.
Studies by Oxford University have also shown genetic screening has an accuracy rate of greater than 95% for detecting abnormal embryos.