Illustration of the three-line pregnancy test stick, how to use it correctly? When women are preparing for pregnancy or have concerns about pregnancy, pregnancy test sticks have become the first choice for many people. The so-called three-line pregnancy test stick refers to the most common type of pregnancy test stick, and the result uses three lines to determine whether you are pregnant. However, for first-time users, it is not easy to use the pregnancy test stick correctly. Here are the preparations before use, correct use method, result determination, and precautions.