2 bars generally refers to the result after using early pregnancy test paper. 2 bars do not necessarily mean pregnancy. Early pregnancy test paper is used to determine whether you are pregnant by measuring HCG in urine. It is generally used for preliminary determination of pregnancy and is not completely accurate, and you should further consult a doctor to check blood HCG and ultrasound for clear diagnosis. If there is measurement error or disease influence, 2 bars of early pregnancy test may also occur. 1. measurement error: if the test paper is out of date and irregular in operation, it may also appear positive for early pregnancy test, i.e. 2 bars, which can be tested again after 2-3 days. 2. disease influence: if a woman suffers from lung cancer, ovarian tumor, bronchial cancer, liver cancer and other diseases, especially gravida and choriocarcinoma, 2 bars may also be measured, at this time It is not pregnancy. In addition, if the test is done after delivery or miscarriage, as there is still residual embryonic tissue in the uterus, the high HCG level will usually last for 4-6 weeks, and if the pregnancy test is done during this time, the test paper will show a positive result, i.e. 2 bars.