Reproductive Hormones During Sustained Administration of Kisspeptin

"Participants will receive kisspeptin hormone at a dose rate of 0.1nmol/kg/hour via a subcutaneous pump device for 8 days during the early follicular phase of their menstrual cycle.~LH, FSH and oestradiol will be measured on day 1 and 8, at 10minute intervals for 8 hours and on Days 3 and 5 they will have a single blood measurement of the same hormones."

"Participants will receive placebo (saline) via a subcutaneous pump device for 8 days during the early follicular phase of their menstrual cycle.~LH, FSH and oestradiol will be measured on day 1 and 8, at 10minute intervals for 8 hours and on Days 3 and 5 they will have a single blood measurement of the same hormones."

"Participants will receive kisspeptin hormone at a dose rate of 0.3 nmol/kg/hour via a subcutaneous pump device for 8 days during the early follicular phase of their menstrual cycle.~LH, FSH and oestradiol will be measured on day 1 and 8, at 10minute intervals for 8 hours and on Days 3 and 5 they will have a single blood measurement of the same hormones."

"Participants will receive kisspeptin hormone at a dose rate of 1.0 nmol/kg/hour via a subcutaneous pump device for 8 days during the early follicular phase of their menstrual cycle.~LH, FSH and oestradiol will be measured on day 1 and 8, at 10minute intervals for 8 hours and on Days 3 and 5 they will have a single blood measurement of the same hormones."