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OverviewOvulation is triggered by the sudden release of the hormone Luteinising Hormone (LH) from the pituitary gland situated close to the brain. The surge in LH occurs approximately 24 to 36 hours before ovulation.
Used each day, on the days around the time when the LH surge is expected, Clearblue Ovulation Test identifies the time in your cycle when you are most likely to conceive. The Test is 99% accurate and takes just 3 minutes to give you your result.