Incidence of Down's syndrome is directly proportional to: (A) Parity, (B) Consanguinity, (C) Maternal age, (D) Mutations
Answer is C. Ans. c (Maternal age). (Ref. Harrison, Internal Medicine, 16th ed., 383)The incidence of Down ys syndrome is highly correlated to maternal age.QUADRUPLE TEST FOR DOWN'S SYNDROME# AFP |# beta-HCG |# Unconjugated estriol |# Human placental lactogen/placental protein A |