When comparing NT scan with other first trimester tests, it’s important to understand that each plays a unique role in early pregnancy screening. An NT scan (nuchal translucency ultrasound) is a non-invasive imaging test performed between 11 to 13+6 weeks that measures the fluid at the back of the baby’s neck to assess the risk of chromosomal abnormalities like Down syndrome. It is often combined with the Double Marker blood test, which evaluates specific pregnancy hormones to improve overall screening accuracy. Together, they form the First Trimester Combined Screening, offering around detection for common chromosomal conditions. On the other hand, NIPT (Non-Invasive Prenatal Testing) is a more advanced blood test that analyzes fetal DNA in the mother’s bloodstream and provides higher accuracy for detecting chromosomal disorders, but it is significantly more expensive. Unlike diagnostic tests such as amniocentesis, all these screening tests are non-invasive and safe for both mother and baby. In summary, NT scan is an affordable and essential early screening tool, Double Marker enhances its accuracy, and NIPT offers higher precision when recommended by your doctor based on risk factors