Creatinine test - Mayo Clinic A creatinine test is a measure of how well the kidneys are doing their job of filtering waste from the blood Creatinine is a chemical compound left over from energy-making processes in muscles
Creatinine | National Kidney Foundation Creatinine is a waste product that comes from the digestion of protein in your food and the normal breakdown of muscle tissue It is removed from the blood through your kidneys Everyone has some creatinine in their blood, but too much can be a sign of a possible kidney problem
Creatinine Test: MedlinePlus Medical Test Creatinine is a waste product made by muscle This test measures creatinine levels in your blood or urine Abnormal levels can be a sign of kidney disease Learn more