During ovulation, serum concentrations peak for which hormone?

During ovulation, there is a significant surge in luteinizing hormone (LH), which is the hormone responsible for triggering the release of an egg from the ovary. This surge occurs approximately 24 to 36 hours before ovulation and is critical for the final maturation of the ovarian follicle and the subsequent ovulation process.

LH plays a crucial role in the menstrual cycle by stimulating the corpus luteum formation and facilitating the release of progesterone after ovulation has occurred. While other hormones such as progesterone, prostaglandins, and prolactin have important roles in the menstrual cycle and pregnancy, they do not exhibit the same peak timing directly associated with ovulation as LH does. Thus, understanding the specific timing and function of LH during the ovulatory phase is key to comprehending physiological changes in the menstrual cycle.