Luteinizing hormone (LH) in elevated quantities causes ovulation (the release of the egg from the ovarian follicle). Throughout the menstrual cycle, a small amount of LH is produced, but during the middle of the cycle LH briefly and dramatically increases. This increase is called the "LH surge" and precedes ovulation. Conception is most likely to occur within 24 to 48 hours following the LH surge. The LH Ovulation Test is specifically designed to detect your LH surge - the time when you are likely to ovulate. If you receive a positive on an LH test, you are in your most fertile phase of your menstrual cycle. The test strip can accurately detect your LH surge when the concentration of LH is equal to or greater than 10mIU/ml. In clinical trials, the LH Ovulation Test has been shown to be >99% accurate in detecting the LH surge. Full instructions included.
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