Tells you if you are pregnant and how many weeks since you conceived: 1-2, 2-3 or more than 3 weeksAs accurate as an ultrasound scan at dating pregnancyTest early: results 5 days before your missed period (4 days before you expect your period)No brand is more accurate: Clearblue is over 99% accurate at detecting pregnancy from the day you expect your periodUnmistakably clear results in words, in 3 minutesNo. 1 brand most recommended in a survey of doctors in the UK (data on file)