The digital that detects the pregnancy hormone first. It takes into account days before missed period. It is over 99% accurate (99% Accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary. See insert.)! Unmistakable digital-read. This kit contains a First Response Digital Pregnancy Test Stick and Instructions. Follow complete instructions inside box. For in-vitro diagnostic use. In clinical testing, First Response detected the hormone levels in 52% of women 3 days before their expected period, in 69% of women 2 days before their expected period, in 86% of women 1 day before their expected period. HSA/FSA EligibleOver 99% accurateNot to be taken internally