<prompt> Ideal time for doing quadruple test:8 - 12 weeks11- 15 weeks15 - 21 weeks20- 22 weeks  <response>: Quadruple test : It includes alpha-fetoprotein AFP human chorionic gonadotropin hCG unconjugated estriol uE3 inhibin A . Ideal time to do quadruple test is 15-21 weeks 