What Is Embryo Grading?
Embryo grading is a tool that assists embryologists and clinicians in determining which embryos to transfer, the best day to transmit, and the optimum quantity of eggs to transplant during an IVF therapy.

Intended parents will find how many embryos have formed and are ready to be transferred throughout the IVF process about 24 hours after fertilization. Keep in mind that this figure will almost certainly vary over time. The lab will check up on the embryos on days five and six to assess how they're doing. Also, you know day 5 embryo transfer success rates.

If you have opted to have PGS or PGD performed on your embryos, this is when the biopsies will take place. On these days, unless you request otherwise, it will get frozen for storage.
The development of an embryo
Embryos get morphologically inspected and rated using specific visual criteria specified by the expert embryologist. Once the details get ironed out, the information is sent on to the prospective parents. From the moment they are produced, embryos continue to develop in the incubator. Based on the number of cells embryo, it must achieve some stage of development.

An embryo consists of two cells the day after conception. These cells divide rapidly over the next few days, eventually forming a "sheet" or blanket of cells on the fifth day after fertilization. A blastocyst is a name for such an embryo. Blastocysts will be ranked based on their size and the rate at which they multiply.
Embryos of Various Grades
At this phase, an embryo is in the following stages:
- Early blastocyst
- Blastocyst
- Expanded Blastocyst
- Hatching expanded blastocyst
- An enlarged embryo is the best quality on Day 5 of embryo development.
Embryologists will subjectively assess an embryo based on its appearance. It is a more subjective assessment, but it is nonetheless significant. This grading system ranges from I to III. And, knowing the day 5 embryo transfer success rates is crucial. Some embryos cells are retained and reevaluated until the sixth day.
Is embryo grading so important?
All of the embryo's components must get considered when determining whether or not it has good potential. Even if they score an A rather than a D, eggs continue to develop. As a result, their ranking may change, potentially rendering lower-graded embryos possibilities for future embryo transfer or freezing.

Embryo grading is a tool that aids scientists and physicians in making decisions, but it is only one element of the process. It is why our doctors and scientists use a patient's entire medical history when determining an embryo's potential. Grading embryos is just one stage in a seemingly endless journey. That is why it is critical to maintaining focus on the objective.

When deciding whether or not to transfer, your medical team considers various factors, including your age, fertility history, which embryos to transplant, how many eggs to transmit, and which day is most likely to result in a healthy pregnancy. So file all of this information away in the back of your memory.