Congratulations on your pregnancy

Congratulations on your pregnancy

Harmony is a new DNA-based blood test that measures the risk of Down syndrome (trisomy 21) from as early as 10 weeks in pregnancy.

Ask Your Healthcare Provider Watch: Prenatal Testing Options Video

A more accurate test 

Harmony is more accurate than traditional Down syndrome blood tests and much less likely to give a false-positive result. That means there will be much less chance your doctor would recommend follow-up testing, such as amniocentesis.

Harmony also tests for two other genetic conditions, trisomy 18 (Edward syndrome) and trisomy 13 (Patau syndrome).

In addition, with Harmony you have the option to evaluate X and Y sex chromosomes.

Non-invasive prenatal testing based on cell-free DNA analysis is not considered diagnostic. Once you have your Harmony test results, you can discuss your pregnancy care with your healthcare provider.

Learn more about the Harmony test



 False Positive Rate*Detection Rate**
Harmony Prenatal Test Less than 1 in 1,600 More than 99 in 100
Traditional Test 1 in 20 79 in 100

*Reports a high risk for Down syndrome when it is NOT actually present
**Correctly indicates a high risk for Down syndrome when it IS present 


As early as 10 weeks

Harmony Prenatal Test requires a single blood draw. It can be done as early as 10 weeks or later in pregnancy. 

Other commonly used tests for Down syndrome are performed later in pregnancy and may require multiple office visits.

Learn more about what to expect with Harmony

A new, DNA-based technology

When you are pregnant, your blood contains fragments of your baby’s DNA. 

Harmony Prenatal Test is a new type of test that analyzes DNA in a sample of your blood to predict the risk of Down syndrome (trisomy 21) and certain other genetic conditions.

Learn more about Harmony’s DNA-testing technology