You can have a kidney stone test without fasting. Kidney stones are more common in urology, and it is best to go to a regular public hospital urology department for consultation and treatment. Routine checkups are usually done as follows: 1. the urologist does a physical examination for the patient by taking a medical history. 2. common auxiliary tests, firstly, you can check urine routine to see if there are red blood cells in the urine, which can indirectly diagnose stones, not necessarily on an empty stomach, patients can do the test with ready urine, and it is better to check urine routine after pain. Secondly, ultrasound examination is convenient, simple, non-invasive and often preferred. Finally, CT urological examination is more accurate. It can detect the size, hardness and location of the stone, the presence of hydronephrosis, the degree of hydronephrosis, etc. This test can also be done without fasting, without worrying about the interference of abdominal contents or gas, which has no effect on the test results.