Outcomes of single euploid transfers based on different “cut-off” values for percentage of euploid cells in the biopsy sample, results from a single center

Preimplantation genetic testing for aneuploidy (PGT-A) utilizes whole genome amplification to ascertain the chromosome copy number within the determined biopsy sample. Reference labs divide their results into three categories: aneuploid, mosaic, and euploid. When the sample has >70% euploid cells, it is referred to as euploid and if the sample has <30% euploid cells it is referred to as aneuploid. When the sample is between 70% euploid and 30% euploid, it is referred to as mosaic. Thus, samples can be called euploid when they have >90% euploid cells, 81-90% euploid cells, and 70-80% euploid cells.