Urine test can not be prepared in advance. In clinical work, if it is not an emergency or rescue patients need to stay immediately urine examination, or to check the 24-hour urine, are required to stay in the morning urine, that is, the first time after getting up in the morning urine, and is fresh urine, the results of the examination is more reliable. Prepare your own urine at home in advance, there is no qualified urine storage container at home, urine is easily contaminated, you can not just find a bottle to store urine. Urine placed for too long, the urine cells and other formation will be destroyed, and urine will also breed bacteria, especially in the summer heat, all will affect the test results. Therefore, in order to check the results of a more reliable, to get up in the morning to endure the urge to urinate, rushed to the hospital, go to the laboratory to take a special container to receive urine specimens to stay urine, stay a good urine immediately after the urine specimens to the laboratory.