<prompt> Inhibin B levels as test of ovarian reserve is best measured on?Day 2 of menstruationDay 3 of menstruationDay 4 of menstruationDay 5 of menstruation  <response>: ANSWER: B Day 3 of menstruationREF: Novaks gyn 12th edp. 406Cycle day 3 is chosen because at this time the estrogen level is expected to be low, a critical feature, as FSH levels are subject to a negative feedbackTests for ovarian reserveDay of testingFSH most commonly usedDay 3Clomiphene citrate challenge test CCCTDay 3Serum inhibin BDay 3Transvaginal ultrasound to assess antral follicle number or ovarian sizeAny 