Pregnancy test paper is generally recommended to use the morning urine drops on the designated location of the test paper, if the display of two red bars, it indicates pregnancy. There are many types of test strips on the market, some of them have a small disposable cup that is specially designed to hold urine, you can pull urine on the cup and put the end of the test strip with the blue arrow into the cup, pay attention that the urine should not exceed the highest point of the arrow, generally if it shows one red bar, it indicates that you are not pregnant, you can check again in two days, if it shows two red bars or one dark and one light bar, it indicates that you may be pregnant. If there is no red bar, the test is invalid. There is another type of test strip which is pen cap type, take out the front end pen cap and pour urine directly into the front end of the pen cap or the two holes in the front end where urine can seep out, then look at the number of red bars and read the result as above, it is recommended to read the result within five minutes, after five minutes it is invalid. It is important to note that the pregnancy test can have false negatives, that is, some red bars do not completely exclude pregnancy, because some women who have postponed their periods or are irregular have a temporary negative result due to the short period of menopause, while others have a positive result after a few days. Therefore, a pregnancy test is an easy way to detect pregnancy with urine.