The kidneys play a vital role in keeping the body healthy by filtering waste products, balancing fluids, and regulating blood pressure. One of the most important ways doctors assess kidney function is through a blood test called eGFR — estimated Glomerular Filtration Rate.
eGFR tells us how well the kidneys are filtering the blood. The higher the number, the better the kidney function.
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Kidney Function and eGFR Stages
Kidney disease is classified into stages based on eGFR values:
- eGFR ≥ 90: Normal kidney function
- eGFR 60–89: Mild reduction in kidney function
- eGFR 30–59: Moderate chronic kidney disease
- eGFR 15–29: Severe kidney disease
- eGFR < 15: Kidney failure
Kidney failure occurs when the kidneys can no longer effectively remove waste and excess fluid from the body. At this stage, dialysis or kidney transplant may be required to sustain life.
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Why Kidney Disease Is Often Missed
One of the biggest challenges with kidney disease is that it is often silent in the early stages. Many people feel well even as kidney function slowly declines. Symptoms such as swelling, fatigue, reduced urine output, or shortness of breath often appear late.
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Protecting Your Kidneys
While kidney damage may not always be reversible, progression can often be slowed by:
- Controlling blood pressure and blood sugar
- Avoiding unnecessary use of painkillers (NSAIDs)
- Staying hydrated
- Eating a kidney-friendly diet
- Regular monitoring of kidney function
Early detection makes a significant difference.
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Conclusion
Kidney failure does not happen overnight. It is usually the result of gradual loss of kidney function over time. Understanding your eGFR number empowers you to take action early, protect your kidneys, and improve long-term outcomes.
Know your numbers.
Protect your kidneys.