The pregnancy test stick is a convenient tool for detecting pregnancy. It can be judged by detecting the hCG hormone level in the urine. When using it, choose the appropriate time, use morning urine, follow the instructions, be careful not to dilute the urine, use it once, and check the expiration date. When interpreting the results, two lines or plus signs indicate pregnancy, and a single line indicates not pregnant. One deep and one shallow may be a weak positive, and many factors need to be considered. If you have any questions, you should consult your doctor promptly.