Fig. 4From: Whole genome non-invasive prenatal testing in prenatal screening algorithm: clinical experience from 12,700 pregnanciesThe average level of fetal fraction for patients depending on the BMI (a), fetus sex (b) and NIPT results: risk of T21 (c) and T18 (d). Abbreviations: NIPT, non-invasive prenatal testing; T, trisomy; BMI, body mass index.Back to article page