However, the scan can help a woman decide whether or not to have a diagnostic test.
Nuchal Translucency is the collection of fluid under the skin at the back of the baby’s neck.
Combined first trimester screening is a non-invasive way of assessing your risk, which means it does not involve putting needles into the placenta or amniotic sac, as happens with CVS and amniocentesis.
Unfortunately, in about 3% of women who attend for this scan, it is found that the fetus has died, often several weeks before and without any warning.
If this has happened appropriate arrangements will be made.
Nuchal Translucency is a combined screening test, which involves an ultrasound scan and a blood test.
This gives the most accurate result for assessing the risk of Down’s syndrome in a foetus during pregnancy.