No brand is more accurate. Positive (pregnant). Negative (not pregnant). Accurate with double confirmation. 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: Greater than 99% (digital). 98% (rapid detection); Number of days before the expected period: -2; Percent of samples from pregnant women giving a pregnant result: 98% (digital). 97% (rapid detection); number of days before the expected period: -3; Percent of samples from pregnant women giving a pregnant result: 95% (digital). 88% (rapid detection); number of days before the expected period: -4; percent of samples from pregnant women giving a pregnant result: 75% (digital). 56% (rapid detection). See side of pack. English and Spanish instructions inside. Try to have a baby try Clearblue ovulation tests. Contents: 2 Test Sticks and 1 English/Spanish Insert. www.clearblue.com. www.swisspreciousdiagnostic.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.Patents: see www.swisspreciousdiagnostic.com/patents.