No brand is more accurate. Positive (pregnant). Negative (not pregnant). Foldable for easy use & disposable. Results 5 days sooner (Clearblue can be used to test up to 4 days before you expect your period (5 days sooner than the missed period). In clinical testing with early pregnancy samples Clearblue gave the following results. Number of Days Before the Expected Period: -1; Percent of Samples from Pregnant Women Giving a Pregnant Result: 98%; Number of Days Before the Expected Period: -2; Percent of Samples from Pregnant Women Giving a Pregnant Result: 97%; Number of Days Before the Expected Period: -3; Percent of Samples from Pregnant Women Giving a Pregnant Result: 88%; Number of Days Before the Expected Period: -4; Percent of Samples from Pregnant Women Giving a Pregnant Result: 56%). Foldable full-size test. 1. Foldable: Easy to use folding full-size test gives clear + or - results in 3 minutes. Handle folds closed for convenient disposal after use. 2. Accurate: Over 99% accurate from the day of your expected period (99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels may vary. See insert). 3. Testing Early: Clearblue can be used to test up to 4 days before you expect your period (5 days sooner than the missed period). In clinical testing with early pregnancy samples Clearblue gave the following results. Number of Days Before the Expected Period: -1; Percent of Samples from Pregnant Women Giving a Pregnant Result: 98%; Number of Days Before the Expected Period: -2; Percent of Samples from Pregnant Women Giving a Pregnant Result: 97%; Number of Days Before the Expected Period: -3; Percent of Samples from Pregnant Women Giving a Pregnant Result: 88%; Number of Days Before the Expected Period: -4; Percent of Samples from Pregnant Women Giving a Pregnant Result: 56%. English and Spanish instructions inside. www.clearblue.com. Follow us on: Facebook. Clearblue Helpline Monday-Friday 8:30 am - 5:00 pm Eastern Time. Toll-free, 1-800-321-3279. Please have the product and packaging, including any foil pouches, with you when you call. Calls are recorded for training and quality control.