What does the NT pregnancy test include? With the continuous development of modern medical technology, more and more pregnant women are beginning to undergo pregnancy tests. As one of the important items, the pregnancy test NT item is widely used in pregnancy health care. So, what does the NT pregnancy test include? This article will elaborate on it from four aspects. 1.NT detection NT refers to the nuchal translucency, which is a transparent tissue that exists in the fetal neck. It is an important tool for early detection of hereditary diseases such as Down syndrome.