Thyroid disease test kit 00043C

for hormonesserumplasma

Product Name: Luteinizing Hormone Assay kit (Fluorescence immunochromatography) Packaging: 20 T/KIT What is being tested? Luteinizing hormone (LH) is a hormone associated with reproduction. Its stimulation of either ovary or testicles results in the release of an egg from the ovary (ovulation) in women or testosterone production in men. This test measures the amount of luteinizing hormone in the blood. LH is produced by the pituitary gland, a small organ located in the center of the head behind the sinus cavity at the base of the brain. Control of LH production is a complex system involving the hypothalamus in the brain, the pituitary gland, and the hormones produced by the ovaries and testicles. In women of childbearing age, several hormones (LH, follicle-stimulating hormone (FSH), estrogen and progesterone) rise and fall in a specific sequence during each menstrual cycle. Womens’ menstrual cycles are divided into follicular and luteal phases, with each phase lasting about 14 days. Near the end of the follicular phase, there is a mid-cycle surge of FSH and LH. This surge triggers ovulation, causing the rupture of the egg follicle on the ovary and the release of the egg. During the luteal phase, the site where the egg follicle ruptured becomes a “corpus luteum.” LH release stimulates the corpus luteum to start producing progesterone. FSH and LH levels decline, while progesterone and estradiol concentrations increase. These hormone levels decrease in turn after several days if the egg is not fertilized. Menstruation starts and when it ends, the cycle begins again.