The rapid rise in Lutenizing Hormone that occurs once a threshold concentration of estradiol is reached
The release of large amounts of Luteinising Hormone (LH) that triggers ovulation in a normal menstrual cycle.
The release of a large amount of Luteinising hormone (LH) from the pituitary which triggers ovulation.
The sudden release of luteinizing hormone (LH) from the pituitary that causes the ovarian follicle to release a mature egg.
The hormone released just before ovulation. It enables the mature egg to be released from the follicle. close window
A sudden and huge increase in production of luteinizing hormone by the pituitary gland in response to sustained and substantial levels of estradiol in the blood in women, midway through the ovarian cycle. Causes ovulation about 36 hours after it starts (about 20 hours after its peak). If not suppressed during assisted conception (see GnRH-agonists and GnRH-antagonists) it can start before human chorionic gonadotropin has been given, so spoiling the timing of egg retrieval. Timely production of the LH surge in adult women depends on female conditioning of the hypothalamus and/or the pituitary gland before birth. Detectable by testing the urine with a special kit, described in WebPage 19. See also follicle tracking.
The release of great quantity of the hormone LH from the pituitary, which triggers ovulation and the resumption of meiosis in the egg.
A spontaneous release of large amounts of luteinizing hormone (LH). This normally results in the release of a mature egg (ovulation).
The increase in luteinizing hormone in your urine. You are most likely to become pregnant if you have intercourse within 36 hours after you detect your LH surge.