MAFP1 - Overview: Alpha-Fetoprotein (AFP), Single Marker Screen, Maternal, Serum

Prenatal screening for open neural tube defect

QUAD1 - Overview: Quad Screen (Second Trimester) Maternal, Serum

Prenatal screening for open neural tube defect (alpha-fetoprotein only), trisomy 21 (alpha-fetoprotein, human chorionic gonadotropin, estriol, and inhibin A) and trisomy 18 (alpha-fetoprotein, human chorionic gonadotropin, and estriol)