Sure Check tests are accurate, discreet and easy-to-use at any time of the day. Surecheck is developed with Colloidal Gold technology which guarantees over 99% accuracy from day 1 of your missed period. The test registers the presence of the HCG hormone in the urine. How to use it 1- Open the protective foil pouch immediately before use. Remove the test and pipette from the pouch. 2- Urinate in a clean plastic cup, draw 3-4 drops into the pipette and dispense it into the sample well of the Cassette. 3- Read the result in 3 minutes