Over 99% accurate (99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary. See insert.) from the day of your expected period (99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary. See insert.). Test 5 days sooner (The Early Result Pregnancy Test can be used as early as 4 days before you expect your period. That's 5 days sooner than waiting until you miss your period to test. The amount of pregnancy hormone increases rapidly in early pregnancy. In clinical testing with early pregnancy samples, the Early Result Pregnancy Test gave the following results: No. of Days Before the Expected Period/% of Samples from Pregnant Women Giving a Pregnant Result: -4, 53%; -3, 74%; -2, 84%; -1, 87%.). Provides early detection of the pregnancy hormone (The Early Result Pregnancy Test can be used as early as 4 days before you expect your period. That's 5 days sooner than waiting until you miss your period to test. The amount of pregnancy hormone increases rapidly in early pregnancy. In clinical testing with early pregnancy samples, the Early Result Pregnancy Test gave the following results: No. of Days Before the Expected Period/% of Samples from Pregnant Women Giving a Pregnant Result: -4, 53%; -3, 74%; -2, 84%; -1, 87%.). Quality guaranteed. Compare to First Response (This product is not manufactured or distributed by Church & Dwight Co, Inc. or Armkel, LLC, distributors of First Response.). Easy to read line result. Simple one step process. Comfortable thumb grip. Results in 2 minutes. Questions? Call us toll-free at 1-800-899-7353 weekdays 8:30 am - 5:00 pm Eastern Time. Our professional staff is available to assist you. For in vitro diagnostic use. (Not for internal use). Contents: 2 test sticks and 1 English/Spanish instruction insert. Quality Guaranteed: This TopCare product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed. Made in China. Packaged in the USA.