Gynaecology & Obstetrics Diagnosis of Pregnancy 0a3f0eb4 Ideal time for doing quadruple test: A 8 - 12 weeks B 11- 15 weeks C 15 - 21 weeks D 20- 22 weeks High-Yield Explanation 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