Aneuploidy Screening (PGT-A)

A genetic screening test that identifies embryos with the correct number of chromosomes before transfer. PGT-A supports healthier pregnancies, reduces miscarriage risk, and improves success rates — especially for individuals with previous IVF failures, miscarriages, or advanced maternal age.

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Aneuploidy screening (PGT-A) genetic testing of embryos before IVF transfer at Genesis Athens.

What is Aneuploidy Screening (PGT-A)?

Preimplantation Genetic Testing for Aneuploidy (PGT-A) is an advanced genetic screening method performed on embryos created through In Vitro Fertilization (IVF). It detects chromosomal abnormalities that could cause miscarriage, failed implantation, or genetic disorders.

Embryos with the correct number of chromosomes (euploid) are more likely to result in a healthy pregnancy, while those with missing or extra chromosomes (aneuploid) may lead to implantation failure or miscarriage.

PGT-A involves an Embryo Biopsy, during which a few cells are gently removed at the blastocyst stage without affecting the embryo’s ability to develop normally. At Genesis Athens, state-of-the-art genetic screening technologies ensure the most accurate and ethical assessment possible, helping couples make informed decisions and improve IVF success rates.

Who is Aneuploidy Screening (PGT-A) for?

Woman over 35 considering PGT-A testing to reduce the risk of chromosomal

Women over the age of 35, where the risk of chromosomal abnormalities increases.

Woman holding a heart symbolizing miscarriage and the need for PGT-A testing.

Individuals or couples with a history of miscarriage or failed IVF attempts.

Magnified embryo representing genetic testing to reduce the risk of chromosomal abnormalities.

Patients who wish to reduce the risk of transferring embryos with abnormalities.

Treatment steps

Your step-by-step guide to Aneuploidy Screening (PGT-A)

Every treatment at Genesis follows a structured, personalised process designed to support you medically and emotionally at every stage. From the first consultation to post-treatment care, we are here to guide you with clarity, expertise, and compassion. While each treatment has its own clinical steps, the journey always begins with understanding your individual needs and building a plan that gives you the best possible chance of success.

Aneuploidy Screening (PGT-A)

Your doctor will explain the role of PGT-A, review your fertility history, and determine whether screening will be beneficial for your IVF plan.

You will undergo a full IVF or ICSI cycle, including ovarian stimulation, egg retrieval, and fertilisation. Embryos are cultured to the blastocyst stage.

A few cells are carefully removed from each blastocyst and sent to a specialised genetics laboratory for analysis. The embryos remain safely frozen while results are processed.

Your doctor will review the genetic findings and help you select the healthiest embryo for transfer based on chromosomal normality and quality.

A frozen embryo transfer is scheduled using the best available embryo. The process is gentle, painless, and performed under ultrasound guidance.

A blood test is performed approximately two weeks after embryo transfer to confirm pregnancy.

Patient Journey

Your pathway to parenthood with us

At Genesis, every fertility journey is deeply personal. We understand the emotional and medical challenges involved, which is why our team is here to support you with care, expertise, and understanding — every step of the way.

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Call our team and let us guide you through the first steps of your fertility journey with kindness, clarity, and full support.

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Meet with a specialist to review your results and receive clear, personalised guidance on your next steps.

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Define your treatment

Your fertility plan will be built around your needs, giving you the best chance of success with care that truly fits you.

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Every journey is different

No two paths are alike. We keep you informed and supported with answers and care tailored to your experience.

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F.A.Q.

Aneuploidy Screening (PGT-A) F.A.Q.

We know that starting fertility treatment often comes with many questions — about the process, the risks, and what to expect. In this section, we address some of the most common concerns to help you feel more confident and informed.

If you do not see your question here, our team is always available to provide further guidance, personalised to your specific situation.

No. PGT-A reduces the risk of chromosomal abnormalities, but it does not screen for all genetic or developmental conditions. It significantly improves the chances of a successful pregnancy.

Yes. The biopsy is performed by experienced embryologists using advanced techniques. The risk of damaging the embryo is extremely low.

No. PGT-A is recommended in specific cases, such as advanced maternal age or repeated IVF failure. Your doctor will advise based on your history and embryo count.

Results typically take 1 to 2 weeks. During this time, embryos are safely frozen and stored in our laboratory.

While PGT-A can reveal the chromosomal sex of embryos, gender selection is only considered in cases of medical necessity, in accordance with local regulations.

In the right cases, yes. PGT-A can reduce miscarriage risk and increase implantation rates by ensuring only chromosomally normal embryos are transferred.

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Aneuploidy Screening (PGT-A)

If you have any questions about aneuploidy screening (PGT-A) or if you’re concerned about your fertility, our friendly patient support team is here to provide the support and guidance you need.

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Success Stories

Results that bring happiness to birth

Behind every success is a unique story of hope, strength, and care. At Genesis Athens, we are honoured to be part of the journeys that lead to new beginnings. From first consultations to the moment a child is born, our team stands beside each individual and couple with expertise, empathy, and dedication. Discover real experiences from patients who turned their dreams into reality — guided by the care, science, and support they found at Genesis.