Every woman's cycle is unique and most people don’t realize that there are only a few days in a woman’s cycle when intercourse can result in conception – and only 2 days when it is most likely: the day prior to and the day of ovulation. That’s why women turn to ovulation tests for help maximizing their chances for conception. The Clearblue Digital Ovulation Test is an easy-to-use home ovulation test, and is over 99% accurate at detecting the luteinizing hormone (LH) surge. The optical reader interprets your result and gives you a clear smiley face in the result window when the LH surge has been detected, identifying your 2 best days to try for a baby. For women whose cycles vary from month to month, it can be especially challenging to accurately detect the timing of the two most likely days to get pregnant. This 20 count test kit will give you the highest chance of detecting your most fertile days whenever they occur.