Understanding Glomerular Filtration Rate (GFR): A Key Indicator of Kidney Health
Our kidneys are the unsung heroes of our body. They play a vital role in maintaining our overall health by filtering waste and excess fluids from our blood. One of the most reliable ways to measure their function is by determining the Glomerular Filtration Rate (GFR).
What is GFR?
GFR is the rate at which your kidneys filter blood per minute and is measured in millilitres per minute (mL/min). Nephrologists analyse GFR to understand how well the kidney is functioning.
Why is GFR Important?
Kidneys work 24/7 to eliminate toxins and maintain a balance of water, salts, and minerals in your body. A healthy GFR ensures this process runs smoothly. Changes in GFR can indicate kidney damage or disease at an early stage, allowing for timely intervention. This underscores the importance of regular GFR testing for early detection and prevention of kidney issues.
How is GFR Measured?
- Serum Creatinine Test: Creatinine, a waste product from muscle activity, is measured in your blood.
- Age, Gender, and Race: These factors are used in equations to estimate GFR.
- eGFR (Estimated GFR): Calculate GFR by combining serum creatinine levels with personal demographics.
GFR Categories and Kidney Health
| GFR (mL/min) | Kidney Function | Stage |
|---|---|---|
| >90 | Normal | Stage 1 |
| 60-89 | Mild decline | Stage 2 |
| 30-59 | Moderate decline | Stage 3 |
| 15-29 | Severe decline | Stage 4 |
| 15 | Kidney failure (dialysis) | Stage 5 |
Symptoms and Signs of Low GFR that we need to watch out for are
- Swelling in the hands, feet, or face
- Fatigue
- Frequent urination
- High blood pressure
Four Key Tips to Improve and Maintain GFR
- Stay Hydrated: Drink plenty of water to help your kidneys filter toxins.
- Healthy Diet: Eat less salt and include kidney-friendly foods like berries, leafy greens, and fish.
- Exercise Regularly: Keep your blood pressure and weight in check.
- Avoid Over-the-counter NSAIDs: Medications like ibuprofen can harm kidney function over time.
Understanding a family history of Kidney disease, Diabetes, and BP could help in early detection of Kidney disease and prevent severe Kidney conditions. By staying informed, taking proactive steps, meeting the best nephrologist for a regular health check-up, understanding your GFR, and following a kidney-friendly lifestyle, you can keep your kidneys functioning at their best.
Your kidneys deserve care. Stay informed, stay healthy!
