Kidney Function Level 19. Patients whose kidney function has dropped to a mere 20 percent are likely to be facing renal failure soon 5. Individuals with 19 percent kidney function in kidney failure have progressed to stage 4 renal disease.
Excretory kidney function is measured as the glomerular filtration rate or gfr the gfr is a measure of the rate at which blood is filtered by the kidneys and is measured in millilitres per minute ml min. At this stage of renal disease it becomes a life and death matter for patients to take good care of themselves. Petite people without much muscle mass will likely have a low kidney number.
This will vary between men and women and it is dependent on muscle mass.
Anything below 80 is generally quite bad. A kidney function test may check to see if the kidneys are filtering waste products too slowly. The blood test to determine a gfr calculates the level of creatinine a waste product in the blood according to webmd. At this stage it is essential to take prompt treatment and avoid kidney failure or dialysis.