Pregnancy test strips have positive, weak positive and negative results. The pregnancy test is based on the level of human chorionic gonadotropin (HCG) in the urine, and there are three types of pregnancy test results, which are indicated by the red color of the bar in the test (which indicates that the level of HCG has reached a certain concentration in the body). If there are two bars that are both dark red in color after the test, it is positive and indicates a possibility of pregnancy. If there is only one red bar, it is negative, which means there is no pregnancy. If the result shows one red color and the other red color is not obvious, it means a weak positive. For patients with positive or weakly positive results need to go to the hospital in time to find out if they are pregnant through blood biochemistry tests. To find out whether you are pregnant or not, it is better to go to the hospital to test more accurately, and at the same time, take a pregnancy test to understand the process of pregnancy. After pregnancy, you need to consult a doctor in time to test whether the pregnancy is safe.