New England Journal of Medicine Study

The New England Journal of Medicine (NEJM) is one of the most prestigious medical journals internationally. A landmark study published in this journal in 2015 showed that non-invasive prenatal testing (NIPT) delivers unsurpassed accuracy for the general pregnancy population. In the first and only blinded prospective study of its kind, NIPT proved superior to traditional first trimester screening for the detection of trisomy 21 (Down syndrome).

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More than 15,000 women aged 18–48 were enrolled in this unique study that compared the performance of two prenatal tests. The results showed that non-invasive prenatal testing (NIPT) significantly outperforms the combination of biochemical and ultrasound screening for trisomy 21.

The test used in this study was the Harmony Prenatal Test.

Download a summary of the NEJM study

Read the full NEJM study