If you think you might be pregnant, you want to know right away. With Clearblue Early Detection Pregnancy Test, you can test up to six days before your missed period (which is five days before your expected period)*. The results are clear and simple to read: two lines mean you’re pregnant and one line means you’re not pregnant**.nClearblue Early Detection Pregnancy Test is also over 99% accurate from the day you expect your period. The easy to use design features an ergonomic curved handle and wide colour-changing tip, and the Clearblue Floodguard Technology helps reduce usage error*