If you can’t hold your urine in the morning for a routine urine test, it is okay to take a second urine for the test. Usually, the first urine test in the morning is appropriate, but if you can’t hold your urine, a second urine test will have little effect on the test results. If a lesion does exist, both the first urine and the second urine can detect it. You should avoid drinking a lot of water before the urine test to avoid diluting the urine and affecting the test results. In addition, when taking urine specimens, attention should be paid to the middle section of urine, first discharging part of the urine to flush out the bacteria left in the urethra and front urethra. Women can wash their vulva in advance to avoid bringing white blood into the urine specimen, and men need to leave the glans out when taking the urine specimen to avoid contamination of the urine specimen by bacteria in the foreskin, which can affect the accuracy of the results. The urine specimens should be sent in time to avoid changes in the composition of the specimen due to prolonged storage, which can affect the test results. For those who are suspected of having urinary tract infections, the urine should be left finished before the use of antibacterial drugs to avoid the urine being interfered with by the drugs, which can lead to false negative test results and result in inaccurate results. In addition, if there is discomfort, urine routine can be done when the symptoms are the most serious urine for examination, for example, those who have frequent urination, painful urination and other discomfort can keep urine specimens for routine urine examination when they have symptoms; those who have hematuria can keep specimens when they have hematuria, so that the test results are more accurate; those who have painful urination can keep specimens when they have painful urination, which helps to detect lesions. After the lesion is found, active treatment should be carried out under the guidance of the doctor.