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GFR Medical Abbreviation

Author: Analgesia logo

Last Updated on February 20, 2025 by Analgesia team

What is Normal GFR

GFR stands for glomerular filtration rate, which is a measure of how well your kidneys are working. A GFR test checks for kidney disease by measuring how much blood your kidneys filter each minute.

  • What it is

    GFR is the rate at which blood passes through the glomeruli, the tiny filters in the kidneys that remove waste and extra water from your blood. 

  • How it’s measured

    GFR can be measured directly, but it’s complicated, so health care providers usually estimate it using a blood test that measures creatinine levels. 

  • What’s normal GFR

    A normal GFR for an adult male is 90 to 120 mL/min, but it varies by age. 

    GFR stages 

      • Stage 1GFR of 90 or higher, with few or no symptoms
      • Stage 2GFR of 60–89, which may be normal for some people without kidney damage
      • Stage 3GFR of 30–59, which can cause anemia, high blood pressure, and early bone disease
      • Stage 4GFR of 15–29, which indicates severe kidney disease
      • Stage 5GFR of 15 or lower, which indicates end-stage renal disease (ESRD)
    GFR and kidney disease 

    • A GFR below 60 for three months or more indicates chronic kidney disease (CKD)
    • A GFR of 15 or lower indicates kidney failure, which requires immediate medical attention
  • What it indicates
    A decreased GFR can indicate kidney disease, as damaged kidneys can’t filter blood as well.

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