Urine pregnancy test accuracy is still relatively high, in 95-98% or more, the accuracy of the test and the time of the test and the correct use of the test is related to the use of early pregnancy test paper to detect human chorionic gonadotropin in the urine to determine the pregnancy, generally in the menopause around 5-6 weeks of the test, if the test time is too early, due to the low level of hormones in the blood, the amount of hormones in the urine is even smaller, the test is very likely to appear negative or weakly positive. The test can easily be negative or weakly positive if it is done too early. It is recommended that the initial monitoring can use morning urine, morning urine is relatively concentrated, so the detection of the positive rate is relatively high, and secondly, the urine should not exceed the max line, the observation of the results of the time within 10 minutes, if there are two red bars suggests that it is positive is pregnant, the appearance of a deep and a light two red bars is weakly positive, and the body of the hormone levels in the urine is low related to the appearance of a red bar is negative, indicating that there is no pregnancy, or the test time is too early, it is recommended that the interval of 3-5 weeks, it is recommended that the test time is too early, it is recommended that the test time is too early. It is recommended to re-test at an interval of 3-5 days.