Evaluating Embryos in the IVF Lab

The Challenge for Embryologists

Your IVF team, including your fertility clinicians, embryologists and their support team, work together to help you make informed decisions throughout your IVF journey.

Embryologists have the difficult and important task of selecting which embryos to transfer – those that they think are most likely to provide the best outcome for their patient. Currently, embryologists make this selection based on traditional “morphology grading,” in which they view embryos under a microscope at fixed times during the first few days of development and assess their visual appearance, such as the number and symmetry of cells, and degree of cell fragmentation.

Based on these snapshot observations, embryologists often have a difficult choice to make when there appear to be several “good/fair” embryos from which to select one or more to transfer.

Applying breakthrough discoveries in early embryo development, the EevaTM Test was designed to give embryologists a reliable, non-invasive method to objectively assess the developmental potential of each embryo during incubation.

Once fertilization is confirmed, it is counted as embryo Day 1 (1-cell stage). Normally developing embryos will continue to divide, reaching the 4-cell stage by Day 2. A percentage of those will develop to the blastocyst stage usually by Day 5.