When couples embark on their IVF journey, hope is often met with uncertainty. For many, this path includes setbacks such as failed embryo transfers or heartbreaking miscarriages — despite having embryos that appeared healthy under the microscope. The emotional and financial toll can be heavy.
For women over the age of 35, or for those with a history of recurrent pregnancy loss or failed IVF cycles, questions begin to arise: Why isn’t this working? Are we missing something beneath the surface?
That’s where Preimplantation Genetic Testing for Aneuploidy (PGT-A) enters the conversation.
What Is PGT-A?
PGT-A is a form of embryo screening that allows fertility specialists to evaluate the number of chromosomes in each embryo before it is transferred to the uterus. Chromosomal abnormalities—known as aneuploidies—are a leading cause of IVF failure, miscarriage, and certain genetic conditions such as Down syndrome.
By identifying embryos with the correct number of chromosomes (called euploid embryos), PGT-A helps improve the chances of a healthy pregnancy and live birth.
When Healthy-Looking Embryos Aren’t Enough
In standard IVF cycles, embryos are chosen based on their appearance — structure, cell count, development rate. However, even the most textbook-looking embryo can carry chromosomal errors that aren’t visible under a microscope.
PGT-A provides the ability to look beyond appearance. It offers a genetic snapshot, giving insight into the embryo’s viability and reducing the emotional weight of “unknowns” in an already complex process.
How PGT-A Works: Step-by-Step
Here’s how the process is carried out during a typical IVF cycle:
- Embryo Culture: After fertilisation, embryos are monitored and allowed to develop in the laboratory for about 5–6 days, reaching the blastocyst stage.
- Biopsy: A few cells are gently removed from the outer layer of each embryo (which would become the placenta), leaving the inner cell mass (which would become the baby) untouched.
- Genetic Analysis: These cells are sent to a lab for chromosome testing using techniques like Next-Generation Sequencing (NGS), which identifies embryos with the correct number of chromosomes.
- Embryo Selection: Only chromosomally normal embryos are considered for transfer or freezing, helping reduce the risk of miscarriage or failed implantation.
- Transfer and Follow-up: Once a suitable embryo is identified, it is transferred in a frozen embryo transfer (FET) cycle, followed by pregnancy testing and routine prenatal care.
Who Should Consider PGT-A?
PGT-A isn’t recommended for every IVF patient, but it is commonly advised for:
- Women aged 35 and above
- Couples with a history of recurrent miscarriages
- Individuals with multiple failed IVF cycles
- Severe male factor infertility cases
- Those seeking to minimise the risk of chromosomal disorders in offspring
What Are the Benefits of PGT-A?
- Improved implantation rates: By focusing on chromosomally normal embryos
- Reduced miscarriage risk: Especially for those with previous losses
- Efficient use of time and resources: Fewer transfers may be needed
- More informed decisions: PGT-A offers clearer data for planning future cycles
Limitations and Considerations
While PGT-A is a powerful tool, it is not a guarantee of success and does have limitations:
- Not suitable for all patients: Especially younger women with no risk factors
- Cost: It adds a significant expense to IVF, though some clinics offer inclusive packages
- No diagnosis of specific diseases: It only checks for chromosomal counts, not all genetic conditions
- Ethical concerns: Some may question the process of discarding abnormal embryos
A Gentle Introduction to IVF Promotions
For those exploring their IVF options, some clinics include PGT-A in limited-time promotions. These offers can ease financial barriers and allow couples to benefit from advanced screening without added cost. While not every promotion suits every couple, options like a free PGT-A screening in certain IVF packages may be worth considering — particularly for those who meet the criteria.
Considering PGT-A? Here’s Where to Begin
For couples navigating the uncertainty of fertility treatment, information is power. PGT-A may not be for everyone, but for some, it helps bridge the gap between IVF failure and success. By evaluating embryos beyond their outward appearance, it allows for more precise decision-making — and in some cases, peace of mind.
If you’re considering IVF and wondering whether PGT-A is right for your situation, start by speaking with a fertility consultant. As one of the top IVF clinics in Malaysia, Genesis IVF Centre offers personalised assessments and access to advanced fertility technologies.
Schedule your consultation today and take the next step toward clarity and confidence in your fertility journey.
