Serum inhibin B is secreted by ovarian granulosa cells staing at:-: (A) Primordial follicle stage, (B) Preantral follicle stage, (C) Early antral stage, (D) Pre ovulatory stage
Answer is B. Serum inhibin B is secreted by ovarian granulosa cells staing at the preantral follicle stage and therefore reflects the size of the growing follicular coho . Reduced inhibin B levels are seen with aging even in normal feile women . Inhibin B alone has poor predictive value for ovarian response but improves the predictive value when added to the CCCT (chlomiphene citrate challenge test)