PGT-A: Pre-Implantation Genetic testing for Aneuploidy
If your doctor has recommended PGT-A (Preimplantation Genetic Testing for Aneuploidy), you may be wondering what it means—and whether it’s right for you.
In this video, we walk you through how PGT-A works, what it tests for, and how it can help guide your IVF journey with more clarity and confidence.
What is PGT-A?
PGT-A is a type of genetic testing used during IVF to assess whether embryos have the correct number of chromosomes.
Euploid embryos (normal chromosome number) are more likely to result in a healthy pregnancy
Aneuploid embryos (too many or too few chromosomes) are less likely to implant or may lead to miscarriage
A common example of aneuploidy is Trisomy 21 (Down syndrome).
How the process works
IVF is used to create embryos
Embryos grow in the lab for 5–7 days to the blastocyst stage
A small number of cells are carefully biopsied from each embryo
The embryos are frozen while samples are sent for testing
Results are typically available in ~3 weeks
Once results are ready, your care team will review them with you and plan your next steps.
Who should consider PGT-A?
PGT-A may be recommended if you:
Are over age 35
Have experienced pregnancy loss
Have had previous IVF failures
Have had a pregnancy affected by chromosomal conditions
Have a known genetic condition in your family
Timestamps:
0:00 – What is PGT-A?
0:45 – Euploid vs. aneuploid embryos
1:30 – IVF + embryo development
2:30 – Biopsy and testing process
3:30 – Timeline and results
4:15 – Who should consider PGT-A
5:30 – Common questions (biopsy, gender, accuracy)
7:00 – PGT-A vs embryo grading