Test Menu

Second Trimester Quad Screen

Quad screening provides a risk assessment for neural tube defects, trisomy 21, and trisomy 18 during the second trimester. This test combines maternal factors, like age, with serum levels of maternal serum alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), unconjugated estriol (uE3), and dimeric inhibin A (DIA).

• Gestational age 15 – 22 weeks 6 days