Question Bank

Question 1

alpha fetoprotein, bHCG, estriol, inhibin A lab values in pregnancy for Down Syndrome vs Edwards Syndrome vs Patau Syndrome

Answer 1

Down Syndrome (21): Low alpha fetoprotein, low estriol, high beta hCG, high inhibin A

Edwards Syndrome (18): low alpha fetoprotein, low estriol, low bHCG, normal inhibin A

Patau (13): low bHCG, everything else normal, also decreased PAPP-A