Table 3.
The comparison results between noninvasive prenatal testing and amniocentesis testing
| noninvasive prenatal testing (cases) | karyotype analysis (cases) | |
|---|---|---|
| Trisomy 21 | 17 | 17 |
| Trisomy 18 | 6 | 6 |
| Trisomy 13 | 1 | 1 |
| Low risk of Trisomy 21, 18, 13 | 2316 | 0 |
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