Clearblue Ovulation Test is a simple and convenient way to determine when you are most fertile and likely to conceive. The test measures the level of luteinizing hormone (LH) in your urine, which typically surges in the body around the time of ovulation. By detecting this LH surge, the test can predict when ovulation will occur, allowing you to maximize your chances of getting pregnant. The test is easy to use and provides accurate results within 10 minutes. It's also non-invasive, so there's no need for a doctor's visit or any discomfort during the testing process.