Answer: Hello dear. Double marker test is screening blood test in pregnancy. ... So after an NT scan, after which you measure the amount of fluid at the back of the neck of the fetus and with the results, this double marker blood test is done and both the combined, and given a combined result as screen positive or negative. It is usually done after 8 weeks of pregnancy up to 14 weeks.
The nuchal translucency scan (also called the NT scan) uses ultrasound to assess your developing baby's risk of having Down syndrome (DS) and some other chromosomal abnormalities, as well as major congenital heart problems.
The NT scan must be done when you're between 11 and 14 weeks pregnant.
All the best.
Question:What is the NT scan and double marker test?
Answer: Hello dear...
A Nuchal scan or Nuchal transculansy scan is a sonographic prenatal scan,which detect the cardiac abnormalities of fetus,though altered extracellular matric composition and limited lymphatic drainage also be detected,it can taken between 11to14 weeks,in which baby's neck is still transparent,it is usually combinedwith blood test ,in first trimester accompanied with screening option
double marker test is a screening blood test in pregnancy,so after an NT scan,which you measure the amount of fluid at the back of the neck of fetus,and with the result,this double marker blood test is done,and both are combined,combined result will give you screen positive or negative