No other brand is more accurate. Over 99% accuracy from the day of your expected period (Over 99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary. See leaflet). Easy to read +/- results. Results 5 days before missed period. Testing before missed period? The E-P-T +/- pregnancy test can be used up to 4 days before your expected period, which is 5 days sooner than waiting until you miss your period to test. However, the distributor of E-P-T recommends waiting until the day of your expected period for more accurate results. If you want to test earlier, keep in mind that levels of the pregnancy hormone vary greatly, which makes testing earlier less reliable. If you test early and get a negative result, the distributor of E-P-T recommends retesting on the day of your expected period. Clinical Results with Early Pregnancy Samples: If 1 day before expected period 87% pregnant women who got a pregnant result with E-P-T; If 2 days before expected period 84% pregnant women who got a pregnant result with E-P-T; If 3 days before expected period 74% pregnant women who got a pregnant result with E-P-T; If 4 days before expected period 53% pregnant women who got a pregnant result with E-P-T. Easy to Read: Easy-to-read +/- indicator. Made in UK.