What Causes Down Syndrome?
How Is Down Syndrome Determined?
These tests can be summarized as follows:
It is usually done between 11th and 14th weeks of pregnancy. In ultrasound, the nuchal thickness of the baby and the level of B-HCG and PAPP-A hormones in the blood taken from the mother are measured.
Performed between the 15th and 22nd week of pregnancy. B-HCG, AFP and estriol levels are checked in the blood taken from the mother.
It is done between the 15th and 22nd week of pregnancy. Here, inhibin A level is also examined in addition to the hormones B-HCG, AFP and estriol measured in the triple test.