Clearblue digital pregnancy test with smart countdown gives you a clear digital result up to 5 days before your missed period. 75% of pregnant results can be detected 5 days before the misspent period, reducing the confusion of interpreting lines at an emotional time. It's easy and hygienic to test with the extra-wide absorbent tip and integrated Floodguard(TM) Technology. The results are displayed in words, Pregnant or not impregnated, which reduces confusion n- Clearblue detects the pregnancy hormone hCG (human Chorionic Gonadotrophin) in urine. Test sensitivity is 25mIU/ml. A 'Pregnant' result stays on screen for up to 6 months - see your doctor if you're still not pregnant or your hormone levels are too low to be detected. Test again in three days. A missed period is the day after you expect your period. 75% of pregnancy results can be detected 5 days before your missed period.