Question
Are early trisomy screening and NT test the same?
Answer
Hello, both NT screening and trisomy screening are tests used to understand the health of the fetus. The NT test is performed through ultrasound around 11-13 weeks of pregnancy for a 21-trisomy screen, while the trisomy screen is conducted through serological markers around 15-18 weeks. These two tests are at different stages and use different methods, and sometimes they need to be combined to obtain more comprehensive information.