Test urine routine morning urine is not much different from the second time, but the second time is not as accurate as the morning urine. It is best to use the morning urine and keep the middle part of the urine for the routine urine test, the result of the morning urine is relatively accurate. The reason for this is that morning urine contains the least amount of water, so the urine will be concentrated and the results will be accurate, and the mid-stream urine will ensure that the urine is not contaminated. Secondary urine will dilute the urine and may contain more water, which may make the test results inaccurate. Avoid staining your underwear when taking the urine test, which can contaminate the urine and make the test results inaccurate. It is recommended to go to a regular hospital under the guidance of a professional doctor to check the routine urine, to avoid the phenomenon of inaccurate examination. If there is any abnormality, timely medical treatment.