Early pregnancy test paper is a product for early diagnosis of pregnancy. Women who have normal sexual life, who do not have other diseases affecting their menstrual cycle and experience a delay in menstruation for more than 7 days, can make a preliminary diagnosis of pregnancy by using early pregnancy test paper. Under normal circumstances, the early pregnancy test paper does not carry its own white mark, but two colorless watermark lines, one of which is the control line and one is the detection line. After testing the urine with the early pregnancy test paper, if both watermark lines are dark red, it indicates a strong positive, suggesting that the woman is pregnant; if the control line on the test paper is dark red and the detection line is pink, it indicates a weak positive, so you should wait for 3-5 days to retest with morning urine; if the control line on the test paper is dark red and the detection line does not show color, it indicates a negative, proving that the woman is not pregnant; if If there is no color line on the test strip, it means that the test strip is no longer valid. When using early pregnancy test strips, it is necessary to pay attention to the accuracy of the method of use so that a correct judgment can be made. The correct way to use the early pregnancy test strip is to take the middle part of the morning urine for testing, dip the end with the arrow mark into the container containing urine, the urine should not exceed the Max line, take it out after about 3 seconds and put it flat, and observe the result within 5-10 minutes.