For instance, it's possible to determine fetal sex by detecting sequences from the male Y chromosome. (newscientist.com)
Manzanares S, Benítez A, Naveiro - Fuentes M, López - Criado MS, Sánchez - Gila M. Accuracy of fetal sex determination on ultrasound examination in the first trimester of pregnancy. (verywellfamily.com)
In the UK, NIPD for fetal sex determination is carried out for an average of 13 pregnancies per year at risk of CAH because it is the female fetuses that are at risk. (sciencedaily.com)