Kidney stone tests usually do not require fasting and urine holding and do not affect the results. The kidneys are substantial organs, and if there are stones forming, they can be detected by ultrasound or other imaging tests, and will not be affected by diet or urine filling volume, so fasting and holding urine are not required for kidney stone tests. However, it is important to note that stones in the kidneys are likely to enter the bladder through the ureter and form bladder stones. Therefore, some people also need to have a bladder test, in which case they need to hold their urine, which fills the bladder to get a better view of what is going on inside the bladder. For those who need to have a kidney stone test, they can go to a local regular hospital and cooperate with the doctor to conduct the relevant examination. If found to have kidney stones, should actively cooperate with the doctor for standardized treatment. Patients also need to drink more water on a daily basis, and a daily water intake of two liters is appropriate.