The reason why it is recommended to use morning urine for early pregnancy test is that the concentration of HCG in the urine is relatively high after the concentration of morning urine overnight, so the accuracy of the test is more efficient. HCG is also found in urine at other times, but in early pregnancy, when the concentration of HCG in the body is not particularly high, the concentration of HCG in urine is not high, so after dilution, false negatives are likely to occur. If the pregnancy has been around for a longer period of time, HCG in the urine at any time can be detected. Therefore, if there is no way to perform a morning urine test, you can use urine from another time to perform the test. If the test is negative, you can perform another urine test every other day to ensure accuracy.