Kidney Level Blood Test. The normal value for egfr is 90 120 ml min. A creatinine level of greater than 1 2 for women and greater than 1 4 for men may be an early sign that the kidneys are not working properly.
The creatinine blood test measures the level of creatinine in the blood. A higher level greater than 0 8 1 2 mg dl in men and 0 6 0 9 mg dl in women may indicate that the kidneys are not. It gives your doctor an idea of how much.
A blood test checks your gfr which tells how well your kidneys are filtering.
How your kidneys are checked. Kidney glomerular filtration rate gfr is a test performed by a simple blood test and used to check how well your kidneys are working by estimating how much blood passes through the glomeruli tiny filters in the kidneys that filter waste from the blood. Their main job is to filter wastes and extra water out of your blood to make urine. Kidney function tests usually require a 24 hour urine sample and a blood test.