This prospective study was established to determine the impact of maternal circulating androgen levels during normal pregnancy on ovarian function, as determined by early follicular phase antimüllerian hormone (AMH) levels, inhibin B levels, and antral follicle count (AFC) in 244 female offspring in adolescence. Maternal circulating total testosterone levels at 18 weeks' gestation were statistically significantly correlated with early follicular-phase circulating AMH levels in female adolescent offspring, but no other statistically significant correlations were determined among the maternal androgens at 18 or 34 weeks of gestation and the markers of adolescent ovarian function. ; Roger Hart, Deborah M. Sloboda, Dorota A. Doherty, Robert J. Norman, Helen C. Atkinson, John P. Newnham, Jan E. Dickinson and Martha Hickey