Kidney function tests are simple procedures that use either the blood or urine to help identify issues in the kidneys. There are a few different types of kidney function tests that investigate various aspects of kidney function. They include Urea, Creatinine, GFR, Sodium, Potassium, Chloride. A blood test that checks how well your kidneys are filtering your blood, is called GFR. GFR stands for glomerular filtration rate.
