First Response with patented ultra sensitive technology can detect very low levels of the pregnancy hormone, so you can know sooner if you are pregnant. 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 the day of your expected period). First Response Instream Pregnancy tests can be used to test any time of the day and results are ready in 2-5 minutes. The sooner you know you're pregnant, the sooner you can take better care of yourself and your baby. Over 99% accurate at detecting typical pregnancy hormone levels. The tests are convenient, easy to use, and provide easy read results. Simply fill the cup provided with urine, remove the test strip from the foil wrapper, and hold the dipping end of the strip in the cup of urine for a few seconds. The tests are designed for women and can be used at any time of day.