From: Performance of non-invasive prenatal testing for trisomies 21 and 18 in twin pregnancies
| Placentation | Case | Maternal age | Gestational age | Conception | Fetal fraction | BMI | NIPT Result | Karyotyping |
|---|---|---|---|---|---|---|---|---|
| DCDA | Case 6 | 26 | 14 | ART | 7.6 | 27 | T7/ Normal | Normal |
| Case 7 | 24 | 18 | ART | 19.7 | 20 | 47,XXX | NA |