Dublin Ultrasound Clinic, Is First In Ireland To Offer Harmony™ Prenatal Test

The Harmony™ Prenatal Test is an advanced blood test to detect common fetal trisomies: Trisomy 21 (T21), Trisomy 18 (T18), Trisomy 13 (T13). It is a non-invasive maternal blood test which can confirm if your baby is chromosomally normal. It can be used by women with singleton pregnancies of 10 gestational weeks or more to assess the risk of fetal trisomies. It can also be used for IVF and non-self singleton pregnancies.

The accuracy rate of verifying whether a woman is carrying a chromosomally normal baby is 99% according to research for the most commony trisomy, which is Trisomy 21 (T21) – down syndrome.

How Does It Work?

Cell-free DNA (cfDNA) are tested to give the most accurate results. Cell-free DNA (cfDNA) are the result of the natural breakdown of fetal cells in the mother’s blood, which are thought to be predominantly placental, and these clear from the system within hours after giving birth. From 10 gestational weeks on, these can be tested for common chromosome conditions, which are called trisomies (trisomy – singular).

The test is non-invasive and therefore does not pose a risk of miscarriage for the pregnancy. At Merrion Fetal Health, the test includes a consultation, the blood test and an ultrasound scan.

A Guide About What The Harmony™ Prenatal Test Can Test For

The test can identify the following:

Trisomy 21 – Down Syndrome – 99% accuracy

Trisomy 18 – Edwards Syndrome – 98% accuracy

Trisomy 13 – Patau Syndrome – 80% accuracy

Who Can Use The Harmony™ Prenatal Test?

Any woman with a singleton pregnancy of 10 gestational weeks until term can avail of the Harmony™ Prenatal Test. It can also be used by women with IVF and non-self singleton pregnancies. It is not yet available for use in pregnancies with multiples – twins, triplets etc.

How Long Does It Take To Get The Results?

Merrion Fetal Health will contact you directly within ten working days with the results. They also have counselling and advice options for all patients and partners, if required.

In order to book or enquire about a Harmony™ Prenatal Test, please call Dublin 663 5060 or see the details below or visit the website of Merrion Fetal Health, at the National Maternity Hospital.


Claire Broughan


Merrion Fetal Health
2nd Floor
60 Lower Mount Street
Dublin 2
Tel: +353 1 663 5060
Fax: +353 1 663 5061

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