
eGFR
Understanding eGFR: A Key Indicator of Kidney Health
Estimated Glomerular Filtration Rate (eGFR) is a crucial biomarker used to assess kidney function. It provides an estimate of how well your kidneys are filtering waste from your blood, which is vital for maintaining overall health. Understanding your eGFR levels can help you take proactive steps in managing your kidney health and preventing potential complications.
What is eGFR?
eGFR stands for estimated Glomerular Filtration Rate, and it measures how well your kidneys are filtering blood. The kidneys play a critical role in removing waste and excess fluids from the body, and eGFR is a key indicator of their efficiency. The test calculates the rate at which blood is filtered through the kidneys, using factors such as age, sex, race, and serum creatinine levels. A higher eGFR indicates better kidney function, while a lower eGFR suggests impaired kidney function.
Factors Influencing eGFR Levels
Several lifestyle and nutritional factors can influence eGFR levels. Staying hydrated is essential, as dehydration can temporarily lower eGFR. A balanced diet low in salt and rich in fruits and vegetables supports kidney health. Regular exercise and maintaining a healthy weight can also positively impact eGFR. Conversely, smoking, excessive alcohol consumption, and a high-protein diet may negatively affect kidney function and eGFR levels.
Medical Conditions Associated with Abnormal eGFR
Abnormal eGFR levels can be indicative of various medical conditions. A low eGFR may suggest chronic kidney disease (CKD), acute kidney injury, or other kidney-related issues. Conditions such as diabetes and high blood pressure are known to affect kidney function and can lead to decreased eGFR over time. Monitoring eGFR is crucial for individuals with these conditions to manage their health effectively.
Normal Ranges for eGFR
The normal range for eGFR varies depending on age, sex, and race. Generally, an eGFR of 90 mL/min/1.73 m² or higher is considered normal, indicating healthy kidney function. An eGFR between 60 and 89 mL/min/1.73 m² may be normal for some individuals, particularly older adults, but could also suggest early-stage kidney disease. An eGFR below 60 mL/min/1.73 m² is typically a sign of kidney impairment and warrants further investigation and monitoring by a healthcare professional.
Understanding your eGFR levels and what they mean for your kidney health is essential. By maintaining a healthy lifestyle and monitoring your lab results, you can take proactive steps to support your kidneys and overall well-being.

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