COMBINED TEST

1st trimester Screening test– from 11th week + 0 days up to 13th weeks + 6 days.

Pregnancies at risk are related to the mother’s age. To estimate the potential risks, a sonographic prenatal screening is performed (nuchal translucency) and then associated with the maternal biochemical parameters (hormone free ß-hCG and plasma protein related to pregnancy).
With a 5% incidence of false positives, it identifies 90% of Trisomy 21 (Down syndrome) and 80-90% of other chromosomopathies (Trisomy 12 and 18).