PGT / PGD

PGS vs PGD: What's the Difference in IVF?

PGS and PGD are often used interchangeably, but they are not the same test. PGS—now called PGT-A—screens embryos for chromosome-number abnormalities, while PGD—now split into PGT-M and PGT-SR—tests for a specific inherited gene variant or a structural chromosome rearrangement.