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Not even noninvasive cell-free DNA can rescue preimplantation genetic testing.


Published in the Proceedings of the National Academy of Sciences.

The latest iteration of PGS/PGT-A analyzes the media in which the embryos spent some time in the lab developing and looks for aneuploidy (chromosomal abnormality) in the embryos. This new testing method circumvents the need to remove cells from the embryos to analyze, but it still comes with all the problems of false positives. Full text available from the link.

Citation Page #: Epub ahead of print

Journal: Proceedings of the National Academy of Sciences

Author Publication: Gleicher N, Barad DH.

Publication Link:

Date: 2019


Norbert Gleicher, MD

Norbert Gleicher, MD, FACOG, FACS

Norbert Gleicher, MD, leads CHR’s clinical and research efforts as Medical Director and Chief Scientist. A world-renowned specialist in reproductive endocrinology, Dr. Gleicher has published hundreds of peer-reviewed papers and lectured globally while keeping an active clinical career focused on ovarian aging, immunological issues and other difficult cases of infertility.

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