Serum estrogen and gonadotropin concentrations in females with PCOS

Mean serum concentrations of LH (mIU/mL), FSH (mIU/mL), estrone (pg/mL), and estradiol (pg/mL) in 10 females without PCOS between days 2 to 4 of their menstrual cycle and 19 females with PCOS. Females with PCOS had, on average, higher serum LH and estrone concentrations than females without PCOS. However, there was substantial overlap between the two groups, and some females with PCOS had normal serum LH and/or estrone concentrations.