The early pregnancy test is a sensitive clinical indicator of early pregnancy by checking HCG in urine, with a detection rate of about 90% and a certain degree of false negatives. For the time when the urine is light, the test result may be distorted, so it is recommended that patients perform the first urine test in the morning. The urine is concentrated overnight and the level of HCG in it is relatively high, while in women who are not normally pregnant, HCG is barely detectable in the urine, so taking morning urine can significantly increase the positive detection rate of early pregnancy. Patients should try to drink less water before going to sleep the night before. If the two red lines of the morning pregnancy test, one of which is lighter and less obvious, are accompanied by a significant delay in the menstrual period, you can go to the hospital for a blood test to check the level of HCG in the blood, which is very effective with a detection rate close to 100%.