The WH Accu Test one-step pregnancy test is a rapid qualitative one-step assay for detection of hCG in urine. The method employs a unique combination of monoclonal dye conjugate and polyclonal slid phase antibodies to selectively identify the hCG in the test samples with an extremely high degree of sensitivity. In less than 5 minutes, levels of hCG as low as 25mlU/ml can be detected. Each one-step pregnancy test strip is individually sealed in a foil pouch with a desiccant inside. Foil pouch strips can be stored at room temperature. Period of expiration is 18 months. This test can be used as early as the first day of missing period. And test can be done at any time of the day. The result can easily be read in 3 minutes. Its accuracy is over 99％.