Today, this non-invasive test is generally performed on pregnant women who obtain risk results from the first trimester triple screening study. The sensitivity obtained for the analysis of trisomies 21, 18 and 13 is greater than 99%.
However, any woman who wishes to do so can do so for peace of mind, even if it is not a risky pregnancy.
If the test were positive, it would be necessary to confirm it with invasive prenatal diagnostic techniques (amniocentesis and chorionic biopsy).
Suggested for you: Non-invasive Prenatal Test in Maternal Blood: Benefits & Indications.