Extremely low false positive rate (3.0mm (fetal echocardiography with a specialised fetal cardiologist is also recommended).Highly accurate detection of common fetal trisomies ie.Non-invasive testing poses little risk to pregnant women.One blood draw performed at 10 weeks or later in pregnancy.Specialist Imaging Partners is pleased to introduce the Harmony Prenatal blood test, a new, affordable, non-invasive blood test for Trisomy 21, 18, 13 and X,Y chromosomal abnormalities using cell-free DNA technology. Your blood sample or the extracted DNA samples will not be used for any other purpose.Back to Services Non-invasive Prenatal Screening – Harmony Test There will be no further clinical testing on this blood and your blood sample will be discarded once we have confirmed the results with you. The laboratory will extract cell-free DNA from your blood and carry out the Harmony test on the cell-free DNA. We will send your blood sample along with your personal information (including name, date of birth, gestational age) to a company called TDL Genetics, which is based in London, United Kingdom. Who carries out the analysis of your blood for the Harmony test? If your pregnancy is 11 +4 weeks or more you can have a nuchal scan (11 +4 -13 +6 weeks), or a mini-anomaly scan (14-19 weeks), or an anomaly scan (19-24 weeks) or a wellbeing scan along with a Harmony TM test on the same appointment for a total cost of £500.If your pregnancy is less than 11 +4 weeks you can have a viability scan and Harmony TM test from 10 weeks at a total cost of £400. It is therefore advisable that you still have ultrasound scans at 11-13 weeks and at 20-22 weeks to examine the fetal anatomy and at 30-32 weeks to examine the fetal growth. The Harmony test does not provide information on physical defects, such as heart or brain abnormalities and spina bifida, or fetal growth.If the scan at 11-13 weeks shows a high nuchal translucency (more than 3.5 mm) or major defects, such as exomphalos, holoprosencephaly, heart abnormalities or megacysis, the chance for some rare chromosomal conditions may be high. In such cases you may choose to have CVS or amnio. The Harmony test does not provide information on other rare chromosomal abnormalities.If the Harmony test shows that there is a low chance (less than 1 in 10,000) that the baby has trisomy 21 or 18 or 13 it is unlikely that the baby has one of these conditions.If you want to be certain if the baby has one of these conditions you should have CVS or amnio. If the Harmony test shows that there is a high chance that the baby has trisomy 21 or 18 or 13 it does not mean that the baby definitely has one of these conditions.What would the Harmony test results show? If you want you can have the test repeated (at no cost) and there is a 65% chance that the test will give a result. This is due to technical problems with the analysis of the sample and does not suggest that there is a problem with the baby.
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