PGD / PGT Genetic Testing

PGD and PGT are embryo testing options used with IVF to gather genetic or chromosomal information before embryo transfer. Patients may hear the terms PGD, PGT-A, PGT-M or PGT-SR depending on the purpose of testing.

PGT-A looks at chromosome number, PGT-M looks for a specific single-gene condition, and PGT-SR looks for structural chromosome rearrangements. Testing can help identify embryos that may be more suitable for transfer in selected clinical situations.

PGD or PGT may be discussed for recurrent pregnancy loss, repeated IVF failure, known genetic disease risk, advanced maternal age, severe male factor infertility or a history suggesting chromosomal concerns.

Embryo genetic testing must be discussed carefully with a fertility specialist and genetic counsellor. Use for embryo sex information or family balancing depends on medical indication, clinic policy and local law.