One of the most important “maternal blood screening tests” is the quad screen test.
Four specific substances will be tested under this test.
They include: hCG (Human chorionic gonadotrophin), AFP (Alpha fetoprotein), inhibin-A and Estriol.
* hCG is a hormone that is created within the placenta.
* AFP is produced by the fetus.
* Inhibin-A is a protein which is produced by the ovaries and placenta.
* Estriol is an estrogen produced by the placenta and also the fetus.
This test is very similar to the triple screen test. The only difference is, in the quad screen test, the possibility of recognizing the risk of Down syndrome is higher with the evaluation of inhibin-A levels.
How is the quad screen test performed?
This test includes collecting a blood sample from the mother, which lasts for 5-10 minutes. This sample of blood is then tested in the laboratory and the results will be displayed within a few days.
During the test process, you will experience slight discomfort. Instead of this, there are no known dangerous consequences or risks associated with quad screen test.
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