Detection rate FPR Trisomy 21 590/594 (99.5%) 0.1% Trisomy 18 222/230 (97%) 0.1% Trisomy 13 30/38 (79%) 0.1% cfDNA does not always correlate with fetal genotype (placental mosaicism, vanishing twin, maternal mosaicism)

Table 3: NIPT Performance–All cfDNA Methods.