Fasting is required in many test programs, especially when blood is drawn for liver and kidney function, patients are required to fast. So many patients have questions about whether urine culture requires fasting. In fact, it is not necessary, because the urine metabolism system and liver metabolism system are completely different, urine culture is to detect the presence of bacteria trapped in the urine. Therefore, urine culture can be performed at any time of the day, but there are certain requirements, such as not to drink a lot of water before the test, so as not to dilute the urine, the bacterial content will also be diluted, which is not conducive to the detection of the presence of normal bacteria.