PGT-A (preimplantation genetic testing)
PGT-A is an optional test that checks an embryo's chromosomes before transfer. Evidence that it improves the chance of a baby for most patients is limited, so it is best discussed case by case.
PGT-A (preimplantation genetic testing for aneuploidy) is an optional test that checks whether an embryo has the expected number of chromosomes before it is transferred.
A note on evidence
PGT-A is often offered as an add-on, but high-quality evidence that it improves the chance of a baby for most patients is limited. It is worth weighing the benefits, drawbacks, and cost for your situation. See questions to ask your clinic.
Sources and further reading
- ASRM: PGT-A committee opinion (2024). Testing limits.
Source links checked on 7 September 2026. This source check is separate from medical review.
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