Find your 2 peak days: at home urine test which pinpoints your 2 most fertile days, to maximise your chances of getting pregnant Over 99% accurate at detecting the luteinising hormone (LH) surge. Hormones are a more accurate predictor of ovulation than basal body temperature (BBT), which only rises after ovulation Easy to read: the only brand giving a unique digital ‘smiley face’ when it detects the LH surge in your urine, prior to ovulation Once your LH surge is detected have sex at any time during the following 48 hours to maximise your chances of getting pregnant WORLD'S NO. 1: World's No. 1 selling brand*, with over 40 years of science 1 Digital Holder and 10 Clearblue Digital Ovulation Test Sticks included Try our FREE Period & Cycle Tracker app: view where you are in your cycle and see how the probability of peak fertility varies for women with the same cycle length as you. Use Clearblue Ovulation Tests to identify your peak days Personal Advisors: should you have any questions about this product, our team are available 07:00 – 15:00 hrs Mon-Fri, excluding Bank Holidays