Embryo grading is a tool that is used by embryologists to assess the quality of an embryo and to track development in the IVF lab for 3 to 7 days. Grading is helpful in determining which embryos are suitable for transfer and which can be frozen and stored for future family building.
If we talk about embryo grading vs PGT, then embryo grading is used by embryologists to evaluate the physical appearance of embryos with the help of a microscope. Factors such as cell division patterns and fragmentation levels are evaluated to assign grades. Whereas PGT ( preimplantation genetic testing) is done to evaluate the chromosomal makeup of your embryo. PGT testing helps to identify the exact number of chromosomes vs. those with chromosomal abnormalities.
Embryos Grading Vs PGT Comparison
Embryo grading is a non-invasive method that is used to assess the embryo’s development at the physical level, and it usually occurs inside the embryo lab of an infertility clinic.
PGT grading: Preimplantation genetic testing is mainly used to understand the genetic makeup of an embryo. When an embryo is biopsied, a small sample is taken from it by an embryologist at the fertility centre. The sample is then sent outside the laboratory to complete the testing process.
Factors That Influence Embryo Quality
There are numerous environmental and biological factors that influence embryo quality, and these help to understand why some embryos grow stronger than others. One of the important factors is:
- Egg quality naturally declines with age; as women get older, the number of healthy chromosomes decreases, increasing the risk of poor-quality embryos.
- Another important factor that influences the health of eggs released during an IVF cycle is conditions such as PCOS, endometriosis or hormonal imbalance.
- The quality of sperm also plays an important role in the development of embryos.
- There can be abnormalities in early cell division due to poor sperm quality, morphology or DNA.
- When intracytoplasmic injection is used, sperm DNA quality can affect embryo development.
- Genetics plays a powerful role, as some embryos may look good under a microscope but may have some chromosomal abnormalities that may increase the chances of miscarriage.
The Conditions Needed for Embryos to Grow
- Steady temperature
- Optimal culture media
- Minimum exposure to environmental toxins
- The embryos should be placed in the best incubators and air filtration system.
Benefits of PGT
PGT is a tool used to identify:
- An embryo euploid (has the normal number of chromosomes)
- Aneuploid (has an abnormal number of chromosomes)
- Mosaic ( a combination of normal and abnormal numbers of chromosomes
- Detects passed-down chromosome abnormalities from one generation to another generation.
Embryo Grading Still Matters If I Am Doing PGT?
Embryo grading is important with or without PGT, as PGT provides an extra layer of information to you and your health care providers during IVF. Before embryo transfer, it helps to identify those embryos that are chromosomally abnormal and on the basis of grade alone, labs cannot differentiate between euploid and aneuploid.
Conclusion
Embryo grading helps doctors to understand development, and it is the only thing that can affect the journey of becoming a parent. Sometimes a lot of lower-grade embryos do become healthy babies, whereas higher-grade embryos sometimes do not implant. When it comes to embryo grading vs PGT, the difference in decision is not always straightforward.
Research suggests that the results of PGT are more predictive of success, and the approach suits you better depending on your unique circumstances. Choosing between embryo grading VS PGT Ludhiana is a complicated process since both hold significant value and provide essential information about embryo quality.
If you are having an IVF treatment, book an appointment at Sofat Infertility and Women Care Centre. Working closely with the best gynecologist, Dr. Sumita Sofat and her team can make an informed decision that can increase your chances of achieving a successful pregnancy.
FAQs
Can a grade B or grade C become a healthy baby?
Yes, if the embryo receives a grade B or C, it means it does not look textbook perfect, but that does not mean the embryo is unhealthy. Sometimes an embryo grows a little slowly in the lab, but when it transfers into the woman’s womb, they catch up beautifully.
Does A Higher Embryo Grade Mean A Higher Chance Of Pregnancy?
No, a higher embryo grade does not guarantee pregnancy; it just increases the odds of implantation. A great-looking embryo might still have chromosomal issues; that’s why grading is used with tests such as PGT.
What is the best embryo grade for the success of IVF treatment?
AA, AB, BA, etc. are regarded as the strongest grades because the inner cell mass and placenta cells appear well developed.
Can I get to know about gender by embryo grading?
No, an embryo’s gender can only be identified with PGT (preimplantation genetic testing).
