Clearblue provides fast, accurate results and now enables you to test up to four days before your period is due. The urine stick has a colour change indicator, turning pink to show you when enough urine has been absorbed to carry out the test. It even tells you if the test has worked and then after two minutes shows you your result. Test any time of day. Test up to 4 days before your period is due. Over 99% accurate. Result takes only 2 minutes. Clear colour change tip for ease of use. Clear 'result window'. Recommended by doctors. Pack contains 2 tests. Please read the instruction leaflet enclosed carefully before carrying out the test.