Kidney Function Test How To Do. If you think you re at risk for kidney disease you can ask your doctor to test your kidney function. For day to day use excretory kidney function is measured by measuring the concentration of a substance called creatinine in the blood.
If the blood test is abnormal it cannot say what is causing the kidney problem. They also remove excess water from the body helping to regulate blood pressure and the fluid balance of the body. This test is called the serum creatinine or plasma creatinine.
Urine tests can also detect whether the kidneys are leaking abnormal amounts of protein a sign of kidney damage.
This can be done in two ways a urine test or a blood test. Blood and urine tests show how well the kidneys are doing their job and how quickly body wastes are being removed. Too much albumin in your urine is an early sign of kidney damage. Gfr is a measure of kidney function and is performed through a blood test.