Ovulation-LH Test (5 tests)

WHAT ARE LH AND OVULATION?

During the entire childbearing age, the period of time between puberty and menopause, women reproductive system meets monthly a series of structural and functional important changes. This happen because of the continuous changes in estrogen and progesterone levels, hormones that are regulated by the Hypothalamus-Hypophysis-Ovary axis. Their concentrations are different during the 4 phases of menstrual cycle: menstruation, follicular phase, ovulation and luteal phase. During the ovulation phase, which occurs around the 12th and the 13th day of the menstrual cycle, the level of estrogen in blood is so high that the hypophysis starts to produce Lh hormones, thus determining the breakdown of the follicle and the release of the egg cell, ready to be fertilized. The egg cell remains fertilizable up to the next 24 hours.