Pregnant women who are at least 10 weeks gestational age with a singleton or twin pregnancy resulting from natural conception or IVF are eligible for this analysis. However, the additional fetal sex chromosome analysis and 22q11.2 deletion can only be performed in singleton pregnancies.
The Harmony NIPT test costs $430. If 22q11.2 Microdeletion is also ordered there is an additional cost of $150.
Results are available 5-7 business days after receipt of the sample at our labs. Other commonly used screening tests for Down syndrome are performed later in pregnancy and may require multiple clinical visits.
Your doctor will provide you with a Harmony test request form. All of our collection centres across Victoria, New South Wales, South Australia, Western Australia and the Northern Territory can collect a blood sample for the Harmony prenatal test. For our collection centres in South Australia and the Northern Territory we recommend ringing ahead.
Over 97% of women will receive a result first time with Harmony prenatal test. Some women will receive a redraw request and a very small number of these women will not be able to get an answer with NIPT at all. These women should discuss with their health care provider other methods for screening their pregnancy. A redraw request is not a cause for alarm. It is due to stringent quality control measures of the Harmony prenatal test or possible biological factors. The most common biological reason is insufficient fetal DNA in the mother’s blood. The ability to accurately measure fetal fraction is an essential requirement for accurate NIPT results.
Sometimes NIPT is not an option for screening a pregnancy. Reasons include pregnancies with more than two fetuses, pregnancies where an empty sac can be identified or some maternal conditions.
Twin pregnancies requesting the Harmony prenatal test will have an assessment for trisomies 21, 18 and 13 and a single result will be reported for the pregnancy. On request, fetal sex can be reported for the pregnancy.