In February 2024, the National Institutes of Health published a new study with this headline: “Preimplantation Genetic Testing for Aneuploidy Could Not Improve Cumulative Live Birth Rate Among 705 Couples with Unexplained Recurrent Implantation Failure.”5
A study by Oxford Academic in 2022 found that only 15 in 100 PGT-A tests were correct, meaning that 85 out of 100 viable embryos were unused or discarded by labs based on AI (artificial intelligence, not even human) error.6 PGT-A examines fertilized eggs grown to 5- to 6-day-old blastocysts, optimal for implantation, yet such preliminary results are treated as gravely definitive.
In October 2019, a large study published in Fertility and Sterility by Santiago Munné found that a single abnormal cell does not doom an embryo and that “PGT-A testing made no difference to rates of live births.”7
To support that finding, Dr. Albert Gutierrez, former head of the FDA department overseeing medical tests, called the tests “meaningless.”