Does urine routine examination require morning urine?

Many people ask whether routine urine tests require a test. In fact, when hospitals do urine tests, they always recommend using morning urine, which is the most concentrated time of the day. This makes it easier to obtain positive information. Before the test, you should also pay attention to avoid excessive exercise, and it is best not to drink water. The test should be done on an empty stomach so that the results will be more accurate.

1. When testing urine in the hospital, it is best to use the first day's morning urine, that is, just a little urine from the toilet when you get up in the morning can be tested. Morning urine is the most concentrated urine of the day and provides the best estimate of kidney function.

2. From a medical point of view, since morning urine is the most concentrated throughout the day, it is convenient to obtain positive information during testing. At the same time, morning urine is formed when the body is at rest, avoiding the influence of human factors such as exercise and dehydration on the urine composition. Therefore, morning urine is the best specimen for urine testing. For the diagnosis of nephritis, urinary tract infection and tumors, collecting morning urine for testing is of greatest significance. Therefore, it is best for the examinee to collect morning urine during the physical examination and not drink water. The examinee must be on an empty stomach, as drinking water will affect the results.

3. Precautions for routine urine examination

1. Time of urine collection: Routine laboratory tests can be done at any time when urine is excreted. In order to observe the results before and after, kidney disease patients are generally required to use the first urine sample in the morning for testing.

2. The urine sample must be fresh. After the urine is left for a few hours, the white blood cells will be destroyed and the pyuria will disappear, glucose will be decomposed by bacteria, the casts will be destroyed, and the cells will be lysed, which will affect the accuracy of the test results.

3. The urine sample must be clean. Women should avoid menstruation, clean the vulva, and avoid mixing in leucorrhea and blood; male patients should avoid mixing in prostatic fluid, etc.

4. The use of antibiotics may affect the accuracy of the examination.

5. In patients with urinary tract infection, pyuria is often intermittent, so repeated examinations are necessary before a conclusion can be drawn.

6. The amount of urine sent for examination: generally not less than 10 ml (at least half the volume of the urine cup).