Kidney Glomerular Filtration Rate. Gfr is considered the optimal way to measure kidney function which in conjunction with albuminuria can help determine the extent of ckd in an individual. Each kidney has one million basic small filters called nephrons each nephron keeps important substances in the body while filtering out waste into urine.
Normal gfr varies according to age sex and body size and declines with age. 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. Glomerular filtration rate gfr estimated gfr egfr is a key method for identifying people with chronic kidney disease ckd.
Central to the physiologic maintenance of gfr is the differential basal tone of the afferent and efferent arterioles see diagram.
Your gfr tells your doctor your stage of kidney disease and helps the doctor plan your. 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. Egfr estimated glomerular filtration rate is the best test to measure your level of kidney function and determine your stage of kidney disease. Glomerular filtration rate gfr 1 kidney damage e g protein in the urine with normal gfr 90 or above 2 kidney damage with mild decrease in gfr 60 to 89 3a moderate decrase in gfr 45 to 59 3b moderate decrease in gfr 30 to 44 4 severe reduction in gfr 15 to 29 5 kidney failure less than 15.