Table 1
Autosomal chromosome aneuploidies present in 247 fetal samples, excluding the translocation case
PCR results
Trisomy 13
Trisomy 18
Trisomy 21
Mosaic 21
Mosaic 18
True positives
1
4
15
1
0
False negatives
0
1
0
1
1
False positives
0
0
0
0
0