For the kidney function test, if if the patient wants a comprehensive test, the price is not the same and the test is not the same. The most expensive kidney function test is more than 190 dollars. In addition to creatinine, urea nitrogen, carbon dioxide binding capacity, and uric acid, there are also small molecule proteins, small molecules in the blood, such as cystatin C, lysosomal enzymes, anti-nuclear antibody enzymes. I.e. alpha 1, beta 2-microglobulin assays. For families that are better off and also require a comprehensive check, the above tests can be done. For initial screening, just do the Kidney Function 4. The 4 items of renal function are carbon dioxide binding capacity, urea nitrogen, creatinine, and uric acid. Generally speaking, these are the main indicators for checking kidney function. However, if you want to know the early damage of kidney function, you need to do a comprehensive examination, and you need the previous examination.