First Response Early Result Instream Pregnancy Test 1 packAll pregnancy tests are not the same. With its sensitive technology, our FIRST RESPONSE Early Result In Stream Pregnancy Test can detect very low levels of the pregnancy hormone hCG 6 days before the day of your missed period (5 days before expected period)1. The sooner you know you are pregnant, the sooner you can take better care of yourself and your baby. FIRST RESPONSE let us tell you first. Can detect pregnancy 6 days before the day of a missed