WHEN SHOULD I GET A QUAD MARKER SCREEN?
Between 15 and 20 weeks of pregnancy, your health care provider may offer you a quad marker screen. The test can only be performed during the 15th and 20th week of pregnancy.
- Alpha-fetoprotein (AFP): A protein produced by the baby’s liver
- Unconjugated Estriol (UE): A protein produced in the placenta and in the baby’s liver
- Human Chorionic Gonadotropin (hCG): A hormone produced by the placenta
- Inhibin-A: A hormone produced by the placenta