The First Response Pregnancy Test is the most trusted early pregnancy test on the market today and it is the most sensitive early pregnancy test available. You no longer have to wait to miss your period! Discover your pregnancy with the rapid accuracy of the First Response Pregnancy Test, boasting a 99% accuracy from the day of your expected period. First Response delivers a ‘first to detect’ technology that is able to detect minute amounts of the HCG hormone as early as six days prior to your missed period. Through the deliverance of rapid results, it empowers mothers to be to commence early prenatal care ensuring the optimal health and support for both the mother and the growing baby.