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Kidney GFR Chart by Age and CKD Stages Table

  • Publish Date : 2019/01/14
  • Author : Disabled World
  • Contact : www.disabled-world.com

Synopsis: Chart of Kidney Glomerular Filtration Rate (GFR) number according to your age, includes table showing chronic kidney disease (CKD) stages.


Main Document

What is CKD?

CKD (chronic kidney disease) means the kidneys are damaged and may no longer filter your blood properly.

You should have your kidneys checked regularly as you can be completely unaware you may have a kidney disease. Generally there is no pain, and often no telltale symptoms whatsoever, that could indicate kidney disease. This means CKD can go undetected and untreated for many years. Kidney tests are extremely important for people who have diabetes, high blood pressure, or heart disease. These conditions can cause injury to your kidneys.

The sooner you are aware you have a kidney disease, the sooner you can get treatment to help delay or even prevent total renal failure.

What is Kidney Glomerular Filtration Rate?

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. per minute. Kidney Glomerular Filtration Rate number is considered by medical professionals to be the best measure of your kidney function and it is a key indicator of renal function.

Besides the blood test result other factors are factored in to determine your GFR number. These factors include:

  • Age
  • Height
  • Weight
  • Gender
  • Ethnicity
  • Blood Creatinine
  • Creatinine Clearance Test

The creatinine clearance test involves urine collection over a 24 hour period and can also provide an estimate of your kidney function. The creatinine clearance test requires a urine sample as well as a blood sample. You collect all your urine for 24 hours and then have a blood test done.

Labeled Cross Section of a Human Kidney

Labeled medical illustration shows cross section of a human kidney - Image Credit: Anatomy & Physiology, Connexions Web site - http://cnx.org/content/col11496/1.6/
About This Image: Labeled medical illustration shows cross section of a human kidney - Image Credit: Anatomy and Physiology, Connexions Web site - http://cnx.org/content/col11496/1.6/

The Stages of Chronic Kidney Disease (CKD)

Your GFR number tells you how much kidney function you have, as kidney disease gets worse, the GFR number goes down. "Normal" GFR is approximately 100 but you will often see it reported as >90 (greater than 90) or >60 (greater than 60). Dosage of drugs that are excreted primarily via urine may need to be modified based on either GFR or creatinine clearance.

A GFR number of 60 or higher is still considered to be within the normal range. A GFR number under 60 can mean you may have kidney disease. A GFR number of 15 or less may mean kidney failure.

GFR % of Chronic Kidney Disease Function
StageKidney Function Severity% Function
Stage 1 Normal - Mild 90% -100%
Stage 2 Mild 60% - 89%
Stage 3(a) Mild to Moderate 45% - 59%
Stage 3(b) Moderate to Severe 30% - 44%
Stage 4 Severe 15% - 29%
Stage 5 Kidney Failure Less than 15%

GFR Number by Age

The normal range of Kidney Glomerular Filtration Rate is 100 to 130 mL/min/1.73m2 in men and 90 to 120mL/min/1.73m2 in women below the age of 40. GFR decreases progressively after the age of 40 years.

Estimated GFR Number by Age Group
Age Mean Estimated GFR (mL/min/1.73 m2)
20-29 116
30-39 107
40-49 99
50-59 93
60-69 85
70+ 75

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