From: Noninvasive prenatal testing for chromosome aneuploidies and subchromosomal microdeletions/microduplications in a cohort of 42,910 single pregnancies with different clinical features
NIPT
Trisomy 21
Trisomy 18
Trisomy 13
SCAs
Other chromosome aneuploidy
CNVs
Total
Positive
155
44
33
147
46
109
534
TP
103
17
4
37
3
20
184
FP
27
14
25
75
29
49
219
PPV`
79.23%
54.84%
13.79%
33.04%
9.38%
28.99%
45.66%