Harmony test is the most proven cell-free DNA NIPT

Why Harmony Test

The Harmony test is the most proven cell-free DNA-based non-invasive prenatal test (NIPT)1


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For three good reasons


Clear answers to your questions

More accurate than traditional screening2

Fewer false alarms

Lower false positive rates* than traditional screening tests2

*The false positive rate is how often the test reports a high probability result in an unaffected pregnancy

Proven by clinical evidence

Evaluated in peer-reviewed publications involving > 268,000 pregnancies in women both under and over age 351

Clear answers to the questions that matter

You need accurate information. The Harmony test is more accurate than traditional first trimester screening tests as demonstrated by a landmark head-to-head comparison study in over 15,000 pregnancies.2

Fewer false alarms

You want reliable information. With the Harmony test, fewer than 1 in 1000 pregnant women will receive a positive result for trisomy 21 (Down syndrome) in an unaffected pregnancy.3 With traditional first trimester screening, 1 in every 20 results is a false positive,2 which can lead to anxiety and unnecessary invasive procedures.


Proven by clinical evidence.

You want results that you and your doctor can trust. Doctors look for clinical studies and evidence before recommending a test. The Harmony test has been used in more than 2 million pregnancies in more than 100 countries.4 It is the most proven cell-free DNA prenatal test available, and is superior to traditional first trimester screening in both high and average-risk populations for trisomy 21.2


  1. Demonstrated by 72 peer-reviewed published studies using the Harmony prenatal test as of January 2021.
  2. Norton et al. New England J of Medicine. 2015; 372(17):1589-1597.
  3. Stokowski et al. Prenatal Diagn. 2015; 35:1243-1246.
  4. Data on file.