Is fasting required for NT scan?

NT screening usually refers to the measurement of fetal nuchal translucency thickness. Fasting is generally not required for this test. However, if a pregnant woman needs to undergo other laboratory tests such as blood glucose, lipid profile, or liver and kidney function tests on the same day, fasting may be necessary. If any discomfort occurs, medical attention should be sought promptly and symptomatic treatment should be carried out under the guidance of a qualified physician. Detailed explanations are as follows:

Fetal nuchal translucency thickness measurement is a non-invasive procedure using ultrasound technology, focusing on accurately measuring the thickness of the transparent layer in a specific region of the fetus's neck. Since this process does not involve blood sampling or assessment of the digestive system, pregnant women do not need to fast when undergoing this examination.

If, in addition to the nuchal translucency scan, a pregnant woman also needs laboratory tests such as blood glucose, lipid levels, or liver and kidney function assessments on the same day, special attention should be paid to whether fasting is required. The results of these laboratory tests are often directly influenced by food intake, as eating can cause fluctuations in indicators such as blood glucose and lipid levels, and may also affect the accuracy of liver and kidney function measurements. Therefore, in such cases, pregnant women should follow their doctor’s advice, learn in advance about, and strictly adhere to the relevant fasting requirements to ensure the accuracy and reliability of laboratory test results.

Maintaining healthy lifestyle habits during pregnancy—including a balanced diet and moderate physical activity—not only helps pregnant women preserve their own health but also creates an optimal environment for fetal growth and promotes healthy development.