<prompt> Secretion of estrogen is maximum at?Just before menopauseAt pubertyAt menstruationBefore ovulation  <response>: ANSWER: D Before ovulationREF: Ganongs 22nded p. 24 Post menopausal estradiol levels: 35 pg LReference ranges for serum estradiolPatient typeLower limitUpper limitUnitAdult male50200pmolL 1455pgmLAdult female follicular phase, day 570500pmolL11022019140pgmL360Adult female preovulatorypeak4001500pmolL110410pgmLAdult female luteal phase70600pmolL19160pgmLAdult female - free not protein bound0.59pgmL1.733pmolLPost-menopausal femaleNA 130pmolLNA 35pgmL 