Clearblue Pregnancy Early Detection Test Pack of 2: When you want to know if you’re pregnant waiting to test can be hard hence Clearblue Early Detection Pregnancy Test can be used up to 6 days before your missed period, which is 5 days before the day you would expect your period to start. Can test 6 days early – Clearblue Early Detection is our most sensitive test meaning you can test up to 6 days before your missed period (which is 5 days before your expected period). It is over 99% Accurate – From the day of your expected period. Easy to use – Clearblue features an ergonomic design, including a longer, curved stick, and wide colour-changing tip. Unique Floodguard Technology – The unique Floodguard Technology, which helps reduce the No.1 reported cause of user error and makes testing easier. Easy to read results – Clear and simple result layout; 2 lines if you’re pregnant, 1 line if you’re not pregnant.