Nuchal Translucency Screening: What It Tells You

Nuchal translucency (NT) screening is a first-trimester ultrasound that measures the small fluid-filled space at the back of your baby’s neck. That measurement helps assess the chance of certain chromosomal conditions and other findings, particularly involving the heart. It’s performed between 11 and 13 weeks, and at our office it’s paired with an early detailed look at your baby’s anatomy. It’s a screening, which means it estimates chances rather than giving a diagnosis.

A first, gentle look, explained simply

The nuchal translucency screening measures the small fluid-filled space at the back of your baby’s neck. That single measurement is meaningful, because a larger space can be associated with a higher chance of certain chromosomal conditions, genetic syndromes, or differences in how the baby is developing, particularly involving the heart.

When it’s done and what’s included

The NT is a specialized ultrasound performed between 11 and 13 weeks. At our office, we go a step further than the measurement alone: we also perform an early, detailed look at your baby’s anatomy to check development at this stage.

About our sonographers

Our sonographers have all completed nuchal translucency certification. The national NTQR certification program is no longer offered in the United States, but our sonographers carry that training and experience.

If you’ve received an elevated result

First, take a breath. This is the single most important thing to understand: an NT screening is a screening, not a diagnosis. An elevated result is not, by itself, confirmation of a problem. It means a closer look is the sensible next step. We’ll typically recommend a more detailed evaluation, which may include a non-invasive prenatal test if you haven’t had one yet, or diagnostic testing. If the measurement is 3.5 mm or greater, we also recommend a fetal echocardiogram with a cardiologist to take a careful look at the heart.

You won’t be left wondering

Whatever your result, you’ll have a specialist who explains what it means in plain terms and lays out your options. From the first measurement onward, this is something we navigate together.