How to calculate gfr using creatinine

Learn how to calculate GFR using creatinine levels and understand the basics of GFR. Also, discover tips for maintaining healthy kidneys here.
How to calculate gfr using creatinine

How to Calculate GFR Using Creatinine

In this article, we will discuss the basics of GFR (glomerular filtration rate) and how to calculate it using creatinine levels. We will also provide some tips on how to maintain healthy kidneys.

Understand the Basics of GFR

GFR is a measure of how well the kidneys are working. It is calculated by measuring the amount of waste products in the blood, such as creatinine, and comparing it to your age, gender, height, and weight. A GFR of 60 or higher is considered normal, while a GFR below 60 may indicate kidney disease.

Get a Creatinine Blood Test

To calculate your GFR, you will need to have a blood test to measure your creatinine levels. Creatinine is a waste product that is produced by the muscles and filtered out of the blood by the kidneys. High levels of creatinine may indicate kidney damage.

Enter Your Age, Gender, Height, and Weight into the GFR Calculator

You can use an online GFR calculator to enter your age, gender, height, and weight, as well as your creatinine levels, to calculate your GFR. Some calculators may also ask for your race and whether you have diabetes.

Interpret Your GFR Results

Your GFR results will be given in milliliters per minute per 1.73 square meters (mL/min/1.73 m²). A GFR of 60 or higher is considered normal, while a GFR below 60 may indicate kidney disease. A GFR below 15 is considered very severe kidney disease and may require dialysis or a kidney transplant.

Understand the Limitations of GFR Calculations

While GFR is a useful tool for assessing kidney function, it is not perfect. Some factors can affect the accuracy of GFR calculations, such as age, muscle mass, and diet. In addition, GFR may not be able to detect early-stage kidney disease. If you are at risk of kidney disease, it is important to talk to your doctor about regular kidney function tests.

Tips for Maintaining Healthy Kidneys

While some kidney problems are genetic or unavoidable, there are steps you can take to maintain healthy kidneys. These include:

  • Drinking plenty of water
  • Eating a healthy diet low in salt and processed foods
  • Exercising regularly
  • Quitting smoking
  • Managing chronic conditions like high blood pressure and diabetes
  • Limiting alcohol consumption
  • Avoiding certain medications that can damage the kidneys.


Calculating your GFR using creatinine levels can provide valuable information about your kidney function. However, it is important to understand the limitations of GFR calculations and to take steps to maintain healthy kidneys. If you have concerns about your kidney function, talk to your doctor about getting regular kidney function tests.

Related video of How to calculate gfr using creatinine