19.
cffDNA. Cell-free fetal
| a. | can be used to determine fetal sex. | |
| b. | can be used to determine fetal Rhesus group. | |
| c. | can be used to determine fetal karyotype | |
| d. | can be used to determine fetal risk of spina bifida | |
| e. | has been used to diagnose Huntington disease | |
| f. | has been used to diagnose myotonic dystrophy | |
| g. | has been used to diagnose fetal HIV infection |