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Tuesday, 18 July 2023 21:26

PGD vs NGS: The Importance and Superiority of Next-Generation Sequencing in IVF

Today, we're going to unravel the complexities of preimplantation diagnostics, focusing on two key players: Preimplantation Genetic Diagnosis (PGD) and Next-Generation Sequencing (NGS). By the end of this article, you'll understand why NGS is considered a more advanced, informative, and overall, a superior choice in genetic testing. But first, let's understand why such diagnostics are crucial in IVF and how they benefit prospective parents.

The Importance of Preimplantation Diagnostics in IVF

In the journey of IVF (In Vitro Fertilization), preimplantation diagnostics play a pivotal role. They help identify genetic disorders in embryos before they are transferred to the uterus. This is crucial because it ensures that only healthy embryos are chosen, increasing the chances of a successful pregnancy and a healthy baby. For prospective parents, this means peace of mind knowing that their future child has the best start in life.

PGD: The Starting Point

PGD is a technique used in IVF to identify genetic disorders in embryos before pregnancy. It's like a first line of defense, ensuring that only healthy embryos are transferred to the uterus. However, while PGD is a proven method, it has its limitations, which is where NGS steps in.

NGS: The Next Level in Genetic Testing

NGS, or Next-Generation Sequencing, is a more advanced form of genetic testing. It's like upgrading from a regular magnifying glass to a high-powered microscope. NGS allows scientists to read and analyze the entire genetic code of an embryo, providing a more comprehensive view of potential genetic disorders.

PGD vs NGS: The Showdown

While both PGD and NGS aim to identify genetic disorders in embryos, NGS takes it a step further. It provides a more detailed analysis, identifying not just the presence of genetic disorders, but also their nature and severity. This extensive data allows for more informed decisions when it comes to selecting embryos for transfer.

Why NGS is the Winner

Here are a few reasons why NGS is considered superior to PGD:

  1. Comprehensive Analysis: NGS examines all 24 chromosomes, providing a complete genetic profile of the embryo. This is not possible with PGD, which can only test for specific genetic disorders.
  2. Greater Accuracy: NGS has a lower error rate compared to PGD, leading to more accurate results.
  3. Cost-Effective: While the initial cost of NGS might be higher, its comprehensive nature can lead to fewer cycles of IVF, making it more cost-effective in the long run.
  4. Future-Proof: NGS is a scalable technology, meaning it can easily adapt to future advancements in genetic testing.

Wrapping Up

In the world of preimplantation diagnostics, NGS is the clear winner. Its comprehensive, accurate, and future-proof nature makes it a superior choice for anyone considering IVF. Remember, knowledge is power, and understanding these techniques can help you make informed decisions about your fertility journey.


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Under Ukrainian law, surrogacy is a legal affordable option for traditionally married couples to have children using their own embryos, or with either an egg or sperm donor. There must be a medical reason you can’t carry a child. You are also able to participate if you have had 4 unsuccessful IVF attempts.