Non-invasive prenatal tests best for Down syndrome
2nd April 2014
Pregnant women may be able to avoid amniocentesis for detecting Down syndrome by having non-invasive testing for fetal DNA instead, a leading obstetrician says.

Non-invasive testing, which costs about $500, is accurate enough for screening and a suitable alternative to amniocentesis, according to Dr Jon Hyett, Head of high Risk Obstetrics at the Royal Prince Alfred Hospital in Sydney.
The test has a sensitivity and specificity of more than 99% for trisomy 21, and thus “performs