![]() ![]() (Risk depends on factors such as your age and whether you have another child with the condition.)īab圜enter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. ![]() (The accuracy range is a bit lower for Trisomy 18 and Trisomy 13.) Your more likely to get a false positive if you're at low risk of having a baby with a chromosomal condition. For Trisomy 21, the chance of a positive result being correct ranges from 33 percent to 83 percent. That means you could get a "false positive" result that would be concerning and might lead you to have additional testing. If you get a positive result, however, the accuracy is less reliable. If you get a negative result for these conditions, there's a high likelihood that the test is correct and you can feel fairly confident that you don't need any further testing. For Trisomy 18, the negative result accuracy is 97.7 percent, and for Trisomy 13 it's 96.1 percent. If you get a negative result, there's less than a 1 percent chance that it's incorrect. That said, when testing for the major conditions (see below), the NIPT test is very accurate – especially if you get a negative result.įor example, when testing for Trisomy 21 (Down Syndrome), the negative result accuracy of the test is 99.5 percent. So, a "normal" NIPT result doesn't guarantee a healthy baby, and an "abnormal" result doesn't mean your baby definitely has a certain condition. That means the results don't indicate for sure whether your baby has a chromosomal condition. No, NIPT is a screening test, not a diagnostic test. If you want to know, the test can tell you if you're having a girl or a boy.Results are provided fairly quickly (within a couple of weeks, often sooner).It's available very early in pregnancy, at 9 to 10 weeks pregnant or later.While you'll need follow-up diagnostic testing to confirm results, negative results provide a high degree of accuracy – and reassurance – for a number of conditions.( Amniocentesis and CVS carry a small risk of miscarriage, for example.) It's perfectly safe for you and your baby and carries none of the potential risks of some other testing.There's no need to schedule and take the time for an invasive procedure, like amniocentesis or CVS. A simple blood draw taken at a regular prenatal checkup is all you need. There are some good reasons why it's such a popular test: In these instances, your doctor will be able to advise if further testing is recommended.NIPT is a simple procedure that provides a lot of useful information. In rare instances despite multiple redraws, the test cannot be performed. In some cases, not enough fetal DNA is detected, and a repeat blood test is needed (no extra cost associated with this). The results will be available in 7-10 working days and sent to your referring Doctor. You can view the Clinpath Patient Brochure here. We ask that you return to AWI after you have had the blood taken. You will be asked some questions in relation to your pregnancy and sent across the hallway to Clinpath for your blood test. When you visit Adelaide Women’s Imaging (AWI) for NPIT (non-invasive prenatal test), you will be greeted by one of our friendly reception staff. About the Harmony Prenatal Test Procedure Please stay hydrated for the appointment. A dating scan can be done at the same time if you have a referral from your Doctor, please mention this at the time of booking. The Harmony Prenatal Test can be undertaken from 10 weeks gestation, please bring a referral with you. It is also referred to as Non-Invasive prenatal testing (NIPT).
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