How do I use a pregnancy test? The main principle of the pregnancy test is to detect the HCG value, which is the value of human chorionic gonadotropin in a month of pregnancy. It is a hormone secreted by the pregnant woman’s body and is present in the urine and blood. It usually appears in the urine after a few days of pregnancy, but due to the small amount of how to get pregnant, it is not easy to detect it at first, and it becomes increasingly obvious only after 10 to 14 days. Therefore, it is recommended to test 10-14 days after the postponement of menstruation (that is, about 40 days after menopause), and try to use the first urine in the morning for testing. How to use the pregnancy test stick: 1. Take out the pregnancy test stick 2. Put on disposable plastic film gloves, squeeze the handle end of the stick and tilt the end of the suction hole towards the bottom 3. Pee on the suction hole on the side of the stick so that the urine passes through the suction hole and maintain the urine receiving time for 1 to 2 seconds 4. The result of pregnancy can be read after 1 minute, while the result of non-pregnancy can be determined after 3 minutes. Results read after 5 minutes are not valid! A urine sample of any time is suitable for pregnancy test. If you are in the early stages of pregnancy, morning urine is the best. The result of the pregnancy test: 1. Two red lines on the pregnancy test: one at T and the other at C. This is a positive indication that you are pregnant. 2.One red line on the pregnancy test stick: only a purple-red band appears in C, and no purple-red band appears in T. This is a negative sign, indicating that pregnancy has not occurred. This is a negative sign, indicating that you are not pregnant. 3.One deep and one shallow line on the pregnancy test stick: one line in T is shallow and the other line in C is dark, which is a weak positive sign and indicates the possibility of pregnancy. 4.The pregnancy test stick does not have a red line: C does not show a purple-red strip, indicating incorrect operation process or the reagent strip has been deteriorated and damaged. In order to make the pregnancy test stick more accurate, the following points should be noted when using the stick: 1. Pay attention to the production date on the box and do not use expired early pregnancy test strips because the chemicals will be invalidated after a long time or improperly stored. 2.Read the instructions carefully before doing the self-test and then follow them carefully. 3.The pregnancy test is usually more accurate to check after 7 days of delayed menstruation. Because it is related to HCG in the body, it can only be obviously measured when HCG reaches a certain level, so it is best to use it after 7 days of menstrual delay. 4, the best time for pregnancy test is generally the best time to do the test in the morning. The morning urine generally has the highest HCG value and the results are relatively accurate. If you do the self-test in the evening, the accuracy will be affected to a greater or lesser extent. 5. The pregnancy test stick is only used to determine whether you are pregnant or not, and the quality of the pregnancy sac cannot be judged by the color shade.