Taking the test.

The Harmony Prenatal Test is done using a simple blood draw. During pregnancy fragments of the baby’s DNA is contained in the mother’s blood. Harmony analyzes and measures this DNA to predict the risk of certain chromosome conditions, like Down syndrome (trisomy 21), in the pregnancy.


Three Steps to Clear Answers


A maternal blood sample is taken at 10 weeks or later.


Your blood sample is sent to the Harmony laboratory, where it is analyzed.


Your results are sent to your healthcare provider within 5-7 days from sample receipt.

Additional Test Offerings


Fetal Sex
(also available with twins)
Monosomy X Sex chromosomes aneuploidy panel 22q11.2


Validated for use in twin and IVF pregnancies, including self and non-self egg donor pregnancies. 22q11.2 testing is not available to women that are known to have this deletion.1

Is Harmony For Me?

Yes, the Harmony Prenatal Test was designed for women of any age* or risk category. It has been extensively tested in both women under 35 and over 35 age groups; studies have included pregnant women ages 18-48 for trisomy 21.1-7

Having An Ultrasound Exam

How do I get Harmony?

Start a conversation with your healthcare provider.

At your next appointment, your healthcare provider can help determine if the Harmony Prenatal Test is right for you and answer questions such as:

  • Do you offer the Harmony test in your office or through a laboratory?
  • What can I learn from the Harmony test?
  • How does Harmony differ from other Down syndrome screening tests?
  • How can I find out how much the Harmony test costs?
  • When and how will you notify me of the Harmony test results?

Once you and your physician decide Harmony is right for you, if you have questions about billing learn about our Patient Access Programs.

View Patient Access Programs

Having An Ultrasound Exam

*Both under 35 and over 35 age group, studies have included women ages 18-48

References: 1. Gil et al. Fetal Diagn Ther. 2014;35:204-11. 2. ACOG Committee on Practice Bulletin No. 77. Obstet Gynecol 2007;109:217-27. 3. Norton et al. Am J Obstet Gynecol. 2012 Aug;207(2):137.e1-8. 4. Ashoor et al. Ultrasound Obstet Gynecol. 2013 Jan;41(1):21-5. 5. Sparks et al. Prenat Diagn. 2012 Jan;32(1):3-9. 6. Sparks et al. Am J Obstet Gynecol. 2012 Apr;206(4):319.e1-9. 7. Verweij et al. Prenat Diagn. 2013 Oct;33(10):996-1001.

The Harmony Prenatal Test measures a woman’s risk of carrying a baby with chromosomal conditions such as trisomies 21, 18 and 13. If your test indicates a high probability result, talk with your healthcare provider about what further diagnostic testing is needed to confirm the result. The Harmony Prenatal Test was developed by Ariosa Diagnostics, a laboratory certified by the federal government to perform highly complex tests. This test is a lab–developed test and has not been reviewed or approved by the FDA.