Clearblue Pregnancy Test with Weeks Indicator. Over 99% accurate. The first and only pregnancy test that tells you how many weeks since you conceived The Clearblue Pregnancy Test with Weeks Indicator. 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 on the digital display if you’re pregnant or not. It also tells you how far along you are – the weeks since conception are shown as 1-2, 2-3 or 3+. You can test 5 days before your missed period (which is 4 days before your expected period). In lab testing, 98% of pregnant results were detected the day before the expected period. 97% 2 days before the expected period. 90% 3 days before and 65% 4 days before the expected period. (Weeks result 97% in agreement with later ultrasound dating scan.) (Based on studies of 187 women comparing result to ultrasound dating). The first and only pregnancy test that tells you how many weeks since you conceived. 1-2, 2-3 or more than 3 weeks.
