Pregnancy test principle

A pregnancy test is a commonly used tool to detect pregnancy. The main principle is to use the chorionic gonadotropin in urine for denaturation or semi-quantitative detection, so it can determine whether pregnancy is pregnant. However, the result of this test is less than 100% detection. If there are some diseases, it may cause the concentration of chorionic gonadotropin in the body to increase, so it will show this false (+) result. Comparatively speaking, the accuracy rate of testing early pregnancy is about 85%-95%. If you want to test whether you are pregnant, you should not check until at least 14 days after sexual life. Because the fertilized egg will rise rapidly after implantation, if the time is too early, it is easy to show (-) results.