Clearblue Rapid Detection Pregnancy Test (Prueba de embarazo Rapid Detection Clearblue) is the only test that has a Color Change Tip that turns pink when urine is being absorbed, giving you extra reassurance that the test is working. It is over 99%** accurate from the day of your expected period and provides easy to read results in a plus (+) or minus ­, giving you clear and confident results. Clearblue Rapid Detection also provides fast results, detecting pregnancy as fast as 1 minute when testing from the day of your missed period. The unique Floodguard Technology helps reduce the #1 reported cause of user error by over 70%*** by keeping excess urine from flooding the test strip.