Notes for the day before nocturia: 1. It is important to know whether the specific item to be picked up tomorrow is a 24-hour urine protein quantification, or a routine urine test, urine sediment test or urine culture test, etc. Different specimens are taken for different items. If it is a 24-hour urine protein quantification, you need to remember the volume of urine in the whole 24 hours, down to the exact number of milliliters. For routine urine tests or urine sediment tests, it is recommended that the first urine in the morning be collected for testing. For urine bacterial culture, it is necessary to retain urine from the middle section of a urination to prevent contamination.2. Try not to drink more water before the urine test, try to go to the urine test on an empty stomach, or do not drink a lot of water within an hour before the urine test to avoid inaccurate results due to dilution of the urine.3. The results are inaccurate.