When testing urine with a pregnancy test is used as an auxiliary diagnostic method to determine a woman’s chances of pregnancy, if it is put into the night that is, two red bars appear after a long time, this test result is not accurate. When testing with a pregnancy test stick, take fresh urine and put the side with the arrow into the urine, but do not exceed the indication line, put it flat after 5 seconds and observe the result within 5 minutes. If two red bars appear, early pregnancy is highly suspected. One red bar dark and one red bar light is a weak positive, and the result can be retested after a week. If one red bar appears, it proves that the woman is not pregnant. After a woman takes a pregnancy test is a urine test done in the morning, she will not look at the results until the evening. It is possible that the urine may be contaminated and exposed to the air for a longer period of time, which may also lead to inaccurate results.