Fetal DNA test / NIPT (non-invasive prenatal test)
Down syndrome due to trisomy 21 (an extra chromosome 21) and the most common other chromosomal abnormalities. Edward syndrome (an extra chromosome 18) and Pateau syndrome (an extra chromosome 13) can also be determined by analysing DNA originating from the baby and circulating in the mom’s blood. This entails a blood specimen from the mom, which is sent to the United States. There are different variations of this test such as the “Harmony ” or “Panorama” test.
The main disadvantage is the cost, which is not reimbursed by all medical aids. Though very accurate, it cannot completely replace an amniocentesis or chorionic villus sample. The DNA tests can be done from 10 weeks. Our recommendation is to perform an ultrasound examination at 12 weeks to help determine whether the DNA test is the most appropriate for you.