Down screening refers to the Down’s syndrome test. For Down’s syndrome screening, only 1 tube of blood is drawn, about 4 milliliters.
Down screening is short for prenatal screening for Down syndrome. Pregnant women are usually screened for Down’s syndrome around 12 to 20 weeks of pregnancy, and it focuses on detecting any abnormalities in the DNA of the fetus. The probability of the risk of Down’s syndrome is calculated from the serum concentrations of free alpha-fetoprotein, free estriol and chorionic gonadotropin combined with the age and gestational week of the pregnant woman. Down’s syndrome screening is an important test in the maternity program.
Down’s syndrome screening results usually take 7 to 10 days. If there is any abnormality in the test report, you need to go to the hospital in time to be guided by a professional doctor and undergo tests such as amniocentesis and 4D ultrasound for further clarification. Once the diagnosis of Down’s syndrome is confirmed, relevant diagnosis and treatment should be carried out under the guidance of doctors.