title: Cell-free fetal DNA tests for trisomy show promise in women at lower risk of affected pregnancies: lower rates of false-positive returns, higher positive predictive value are associated with cfDNA tests versus standard screening panels, say experts.
mesh_terms: D002887:Chromosomes, Human, Pair 18 / Q000235:genetics; D004247:DNA / Q000097:blood*; D004314:Down Syndrome / Q000175:diagnosis* / Q000235:genetics; D005189:False Positive Reactions; D005260:Female; D005312:Fetal Blood; D005820:Genetic Testing / Q000379:methods*; D006801:Humans; D007258:Informed Consent; D011247:Pregnancy; D014314:Trisomy / Q000175:diagnosis* / Q000235:genetics; D000073842:Trisomy 18 Syndrome
chemical_list: D004247:DNA