Clearblue Rapid Detection Pregnancy Test is designed to be the easiest to use, featuring an ergonomically curved handle, 50% wider color-changing tip for easy sampling, and clear + or - results. Results are over 99% accurate from the day of your expected period, giving you a clear and accurate result when you need it most. Floodguard feature reduces the No. 1 cause of user error by over 70%. Key benefits fast and precise a pregnancy result may appear in as little as 1 minute when seeing a chart for results from clinical testing of Clearblue Rapid Detection Pregnancy Test with early pregnancy samples. If testing before your expected period, you must use the first urine of the day; otherwise you can test at any time of day. Can any medication or medical conditions affect the result? Other fertility therapies (such as clomiphene citrate), painkillers, and hormonal contraceptives (e.g., contraception pill) should not affect results.