Kidney GFR Chart by Age and CKD Stages Table
Topic: Kidney Cancer
Ian C. Langtree - Content Writer/Editor for Disabled World
Published: 2019/01/14 - Updated: 2023/09/01
Publication Type: Charts / Graphs / Tables
Contents: Summary - Definition - Introduction - Main - Related
Synopsis: Chart of Kidney Glomerular Filtration Rate (GFR) number according to your age, includes a table showing chronic kidney disease (CKD) stages. Your GFR number tells you how much kidney function you have; as kidney disease worsens, the GFR number decreases. "Normal" GFR is approximately 100, but you will often see it reported as >90 (greater than 90) or >60 (greater than 60). The usual 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 40.
Introduction
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 that could indicate kidney disease. This means CKD can go undetected and untreated for many years. Kidney tests are critical for people with 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.
Main Digest
What is Kidney Glomerular Filtration Rate?
Glomerular Filtration Rate, or GFR, is a key indicator of renal function.
eGFR is estimated GFR and is a mathematically derived entity based on a patient's serum creatinine level, age, sex and race. eGFR is only an estimate of kidney function and significant error is possible. The eGFR is most likely to be inaccurate in people of body type e.g. patients with limb amputations, severely malnourished and morbidly obese individuals.
Kidney glomerular filtration rate (GFR) is determined by having a blood test to check how well your kidneys work by estimating how much blood passes through the glomeruli; tiny filters in the kidneys filter waste from the blood per minute. Medical professionals consider the kidney Glomerular Filtration Rate number to be the best measure of your kidney function, which 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 24 hours and can also estimate 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.
Labeled Cross-Section of a Human Kidney
Labeled anatomy of the human kidney. Blausen.com staff (2014). Medical gallery of Blausen Medical 2014. WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436.
The Stages of Chronic Kidney Disease (CKD)
Your GFR number tells you how much kidney function you have; as kidney disease worsens, the GFR number decreases. "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.
| Stage | Kidney 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 40. GFR decreases progressively after the age of 40 years.
| 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 |
Further Resources
- What is the Risk of Developing Kidney Failure in Your Lifetime - Study reveals how likely middle-aged adults are to develop kidney failure during their lifetime - American Society of Nephrology
- Increased Lifespan of Transplanted Kidney's - An international study lead by kidney specialist Maarten Naesens of KU Leuven shows that the progress of the lifespan of a transplanted kidney is stagnating - Ku Leuven
- Home Urinalysis Test Strip Color Chart and Explanations - Example color chart to compare home urine test strip colors in comparison to an urinalysis color chart of what each ideal test result color should read - Disabled World
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Cite This Page (APA): Langtree, I. C. (2019, January 14 - Last revised: 2023, September 1). Kidney GFR Chart by Age and CKD Stages Table. Disabled World. Retrieved September 13, 2024 from www.disabled-world.com/health/cancer/kidney/gfr-ckd.php
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