Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The results of noninvasive prenatal testing using fetal cell-free fetal DNA in 2340 pregnant women. A: Trisomy 13; B: Trisomy 18; C: Trisomy 21. The yellow and purple points represents T-score of pregnant women, red point indicates T-score of pregnant women with high risk of Trisomy 13, 18, 21.
