First Response is the #1 selling pregnancy test brand [4][4] Nielsen AOC Diagnostics Database as of 7.15.17.The only brand that can tell you 6 days sooner than your missed period [2][2] First Response Digital Gold Pregnancy Test detects the pregnancy hormone 6 days sooner than the day of your missed period (5 days before the day of expected period).Over 99% accurate from the day of your expected period [1][1] >99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary.Unique "test is working" indicator lets you know the test is ready for useEasy-t-o read "YES+ / NO-" results