All pregnancy tests are not the same. Pregnancy testing has evolved to become so sensitive that pregnancy can now be detected as early as 6 days before the day of your missed period (5 days before day of expected period). First Response Instream Pregnancy tests are easy to use and over 99% accurate. You can test any time of the day and results are ready in 3 minutes. The sooner you know you're pregnant, the sooner you can take better care of yourself and your baby. First Response; let us tell you first. In clinical testing First Response detected the hormone levels in 62% of women, 6 days before the day of missed period (5 days before the day of expected period), 78% of women 5 days before their missed period, 87% of women 4 days before their missed period, 98% of women 3 days before their missed period and 99% of women 2 days before their missed period. Over 99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary, some pregnant women may not have detectable amounts of the pregnancy hormone in their urine on the day they use the test. Follow the instructions enclosed with product. Researcher and Sponsor; Church and Dwight (Australia) Pty Ltd.