This Clearblue pregnancy test is for home use. Clearblue gives you a clear simple and reliable answer. Clearblue gives you a plus or minus result that is easy to read. Clearblue is more than 99% accurate and gives you a result within 1 minute. You can use Clearblue from the first day that you're over time. With one step, the test is very simple to use. If you are pregnant, your body produces the pregnancy hormone called human chorionic gonadotropin (hCG). The amount of hCG in your body increases very rapidly during the first 12 weeks of your pregnancy. Although the amount of hCG between week 7 and 12 is the highest level it remains higher than normal for the remainder of the pregnancy and until 3 weeks after the birth. If you have had a miscarriage or termination of pregnancy, the amount of hCG can be a long time higher than normal, even up to 9 weeks.