In fact, the false-positive result of the early pregnancy test paper is mainly caused by biochemical pregnancy. Often, when the early pregnancy test is done in the morning urine after menopause, there will be a weak positive result, followed by a small amount of vaginal bleeding, and then the test will turn negative, which is caused by biochemical pregnancy. In case of biochemical pregnancy, it is best to test by blood HCG. Generally, the blood HCG is relatively low but higher than the normal index, and the level of HCG will drop when tested again, which is clinically caused by biochemical pregnancy. If there is a positive result with the early pregnancy test paper, it must be related to the pregnancy and there will not be a false positive result.