Kidney function test does not only mean blood test. There are many kinds of kidney function tests: 1. At the hospital the doctor may first prescribe a routine urine test. Urine routine test is mainly to rule out whether there is kidney function injury. The main thing that you want to rule out in the urine test is whether there is proteinuria, hematuria, white blood cells, red blood cells or various tube types. First of all, to rule out whether there is any kidney disease; 2, through the blood test kidney function, that is, often referred to as renal function. Kidney function is generally divided into three renal function, four renal function tests; 3, in addition to blood tests, there is also the glomerular filtration rate, which can directly reflect the state of renal function, these are through the doctor to get the test items, calculated by the formula.