Afternoon urine can also detect pregnancy. With the improvement of pregnancy test technology, its sensitivity has become stronger and stronger, so whether it is morning urine or afternoon urine, it can detect pregnancy as well. However, if the patient is newly pregnant, it is best to use morning urine because the HCG concentration in the morning urine is higher and the test will be more accurate because the HCG concentration in the morning urine is still low. In addition, do not drink too much water before retaining the urine, if you drink too much water, this will dilute the urine and make the HCG value in the urine drop, which will lead to a false negative result. The pregnancy test must be stored well, if the stick is wet due to improper storage, it will also detect a false negative.