Clearblue Digital Pregnacy Test 2 So Accurate - Also Tells you How Far Along you are (1-2, 2-3, 3+ weeks since conception) The Clearblue Digital Pregnancy Test with Conception Indicator is the first and only test that is as accurate as an ultrasound scan at dating pregnancy**. Its Smart Dual Sensor not only tells you in words if you're 'Pregnant' or 'Not Pregnant', also tells you how far along you are So Accurate... Tells you How Many Weeks It's like 2 tests in 1 - it first detects if the pregnancy hormone is present with over 99% accuracy from the day your period is due, and if you are pregnant, it ALSO indicates how many weeks since conception occurred 1-2, 2-3 or more than 3 weeks (3+). The Conception Indicator is 92% accurate in detecting when you conceived. Test up to 4 Days Early So sensitive you can test up to 4 days before your period is due*. Unmistakably Clear Digital Results Within 3 minutes your 'Pregnant' or 'Not Pregnant' result in words will appear on the screen. If the result is 'Pregnant' the test will also indicate time since conception occurred ( 1-2, 2-3 or 3+ weeks). ?View all Clearblue Products * Clearblue recommends that you test from the day your period is due. However, the pregnancy hormone increases rapidly in early pregnancy and Clearblue can be used to test up to 4 days before your period is due. In clinical testing with early pregnancy samples Clearblue gave the following results: 55% of women received a 'Pregnant' result 4 days early, 86% of women 3 days early, 97% of women 2 days early,98% of women 1 day early. If you test early and get a 'Not Pregnant' result it is possible that the level of pregnancy hormone may not yet be high enough to be detected. You should test again when your period is due ** 'Weeks' result 97% in agreement with later ultrasound dating scan. Based on studies of 187 women comparing results (1-2, 2-3, 3+ weeks since conception) to ultrasound dating +/- 5 days.