Genetic Testing Options During IVF—A Clear Guide
Thinking about embryo testing? This guide walks you through PGT-A, PGT-M, and other options.
Genetic testing during IVF can help reduce uncertainty and provide peace of mind, especially if you have a known family history, are using donor gametes, or just want more information about your embryos. This guide walks you through the most common testing options available during IVF—and how to decide what’s right for you.
What can you test for?
PGT-A | Screens embryos for the correct number of chromosomes (aneuploidy). Often used to reduce miscarriage risk and improve implantation odds. |
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PGT-M | Tests for specific inherited conditions, like cystic fibrosis or Tay-Sachs, if both partners are known carriers. |
PGT-SR | Looks for structural rearrangements in chromosomes (like translocations). |
Who is it for?
PGT-A is sometimes recommended for people over 35, those with a history of miscarriage, or when transferring a single embryo. PGT-M is for families with a known genetic condition.
What’s the process?
Embryos are biopsied (a few cells are removed) after fertilization and tested in a lab. You’ll work with your IVF team and possibly a genetic counselor to decide which tests to run. Results usually take 1–2 weeks.
Does it guarantee a healthy baby?
No test can promise that—but it can help reduce the chance of serious known conditions. It’s one tool in the larger IVF decision process.
Is it required?
Not at all. Some families choose not to test. Others find the information helpful in planning transfers.
If you’re unsure, a consult with a genetic counselor can help weigh the pros and cons based on your values, not just your numbers.