During the entire pregnancy examination process, Tang screening is a very important examination link and a crucial examination that every pregnant mother must undergo. If the Tang screening result of the pregnant mother shows high risk, further non-invasive DNA or amniocentesis should be performed. Tang's examination results usually come out within a week, depending on the efficiency of the hospital. So, how long does the Tang screening test require fasting?
There is no specific regulation on the fasting time for Down syndrome screening, as long as the examination is conducted in the morning of the same day and breakfast is not eaten that morning. However, if a pregnant mother drinks water in the morning, she cannot undergo a check-up. Due to the intake of water and diet, the concentration of various components in the blood of pregnant women can be affected to varying degrees, which can further affect and fluctuate the results of Down syndrome screening. Therefore, it is necessary to be in an empty stomach state before the examination.
Down syndrome screening does not consume a significant amount of time for pregnant mothers. So, when the pregnancy cycle has reached the 9th to 13th week, or the 15th to 20th week, expectant mothers should go to the hospital for examination in a timely manner, and never procrastinate in the examination during pregnancy.
Down syndrome screening is a blood test that measures the levels of HCG, AFP, and free estriol in the serum of pregnant women. By combining the mother's own weight, medical history, and age, the risk of fetal disease is calculated. Pregnant women with high blood lipids can affect serum separation, so it is necessary to have a light diet as much as possible to prevent difficulties in serum separation caused by high blood lipids.
