The renal nuclear test is commonly used to assess renal function, including effective renal plasma flow and glomerular filtration rate, as well as upper urinary tract patency. RNT is a nephrology test that examines renal function and upper urinary tract patency. Nephro-nuclide test is to inject radionuclides into the body, which gather in the kidney area, and then excreted out of the body after glomerular filtration or tubular secretion, which can find out the perfusion of renal blood flow, glomerular filtration, and the structure and function of the urinary system. Renal nuclear examination can find out the effective renal plasma flow, glomerular filtration rate and so on. Renal nuclear examination has the advantages of rapid operation, no pain, and can be repeated within a short period of time, but it may also have the disadvantages of not being able to show changes in the structure of the kidneys and not being able to make a judgment on the cause of the disease. However, it may not be able to show the structural changes of the kidneys or determine the cause of the disease. In addition, the simple renal nuclear test may have some errors in determining the glomerular filtration rate. If patients need to undergo a renal nuclear test, it is recommended to go to a regular hospital to have the test results prescribed and evaluated by a professional doctor.