Level 1 or NT_NB Scans, Level 2 Scans

What is Level 1 or NT/NB Scans, Level 2 Scans?

NT/NB Scan

The Nuchal Translucency Scan is also identified as the Pregnancy Ultrasound NT/NB Scan. This is a non-invasive scan where the size of the Nasal Bone (NB) and Nuchal Translucency (NT) is measured.

Level 1 scan / Growth Scan

Ultrasound level 1 or growth scans are performed during the second trimester of pregnancy. This is a scan that helps find out about the embryo’s proper growth in the uterus.

The scan helps to classify the conditions below:

  1. The placenta’s positioning in the uterus.
  2. If the fetus is properly developing and where it is situated.
  3. The quantity of amniotic fluid. It is vital for the embryo’s good development.

Level 2 Ultrasound / Anomaly Scan

In the second trimester of pregnancy, the Level 2 or Anomaly Scan is performed. The precise time for this is the 20th week. This scan is same as the Level 1 scan but the only distinction is that it requires up to an hour to complete and also dictates the child’s development.

The scan helps to classify the conditions below:

  1. The form of the head and spinal cord of an infant.
  2. The cleft lip and other external characteristics are examined in-depth, such as the legs and hands.
  3. The functionality of the heart, the kidney, and the bladder.

When it is done?

It is done to determine the possibility of congenital anomaly in pregnant mothers between 11-13.6 weeks of gestation.

Is this test necessary?

This test can certainly be used to rule out the possibility of chromosomal anomalies in your infant.


Dr Manju whig Singh is here to provide you with the absolute best fetal health care in Greater Noida. If you have any doubts or worries about it, schedule an appointment today to speak with us.