Genetics & PGT
Biopsy is now usually performed at the blastocyst stage (trophectoderm biopsy), after which embryos are typically frozen while results are awaited.
Also known as: trophectoderm biopsy, TE biopsy
Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.