Many parents at the other end of the screening results describe the experience as stressful and scary because they weren’t given sufficient information about the accuracy of the tests and the possibility of false positives. A recent New York Times article, “When They Warn of Rare Disorders, These Prenatal Tests Are Usually Wrong” by Sarah Kliff, indicates that when cell-free DNA prenatal screening results show that a baby has high chances for some rare genetic conditions, the baby actually does not have the condition 70-90% of the time (a false positive) (2022).
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