eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²: Is That Normal?

Written by

Ernestas K.

Clinical research writer specializing in human health, biology, and preventive medicine.

Reviewed against NKF, NIH, CDC, KDIGO, Mayo Clinic guidelines · Last reviewed March 26, 2026

Is eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² Low, Normal, or High?

eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² might be considered a reading that suggests a mild reduction in kidney function for many adults, placing it just below the ideal range generally observed in younger, healthy individuals. While not in the lowest tiers, this specific value indicates that your kidneys may not be filtering waste as efficiently as they once did, or as robustly as in the broader population. Compared to the average eGFR of around 90-100 mL/min/1.73m² seen in healthy young adults, an eGFR 63 is a notable departure, prompting a closer look at what this measurement signifies for your overall health. Understanding where your eGFR 63 stands in comparison to others can offer valuable perspective on your kidney health journey and empower you to take proactive steps.

Hidden Risk of eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

An eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² is not usually a cause for immediate alarm, but it can be a subtle indicator that your kidneys are working harder than they should, which may carry certain long-term implications for your health. This level of kidney function, while mild, can sometimes be associated with a slightly elevated risk for cardiovascular concerns, as kidney health and heart health are closely linked. The National Kidney Foundation highlights that even early reductions in kidney function can influence the body's overall well-being, including how it manages blood pressure and fluid balance. When kidney filtration is not optimal, the body might retain more fluid and waste products, potentially straining the heart over time. It is crucial to understand that an eGFR 63 is an early signal, not a definitive diagnosis of severe disease, but rather an invitation to explore preventive measures and maintain kidney vitality. For instance, people with an eGFR 63 might experience:

• A slightly increased risk for high blood pressure, as the kidneys play a key role in regulating it.
• Potential for changes in how certain medications are processed by the body, requiring careful dosage adjustments.
• A need for more regular monitoring of kidney function to track any further changes.

What Does a eGFR (Estimated Glomerular Filtration Rate) Level of 63 mL/min/1.73m² Mean?

When you see an eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m², it represents an estimate of how well your kidneys are filtering waste products from your blood. Think of your kidneys as a pair of sophisticated, highly efficient coffee filters, constantly working to clean your blood. The 'filtration rate' is essentially a measure of how quickly blood is passing through these filters, and how effectively they are removing toxins and excess water. An eGFR 63 suggests that this filtering process is happening at approximately 63% of the capacity that would be seen in a perfectly healthy, young adult. It is a mathematical calculation, not a direct measurement, taking into account factors like your age, sex, and creatinine level in your blood. For many adults, an eGFR above 90 is considered optimal, while values between 60 and 89 mL/min/1.73m² with no other signs of kidney damage are generally monitored closely. A value of 63, therefore, falls within this monitored range, indicating that while kidney function is reduced, it is not yet in a severely compromised state. The American Society of Nephrology emphasizes that understanding your eGFR helps to gauge kidney health and allows for timely interventions if needed. This specific eGFR value encourages an inquiry into potential underlying factors that might be influencing kidney performance, such as long-standing conditions or lifestyle choices.

Lifestyle Changes for eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

Addressing an eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² often involves looking at various lifestyle factors beyond just what you eat. Regular physical activity is a cornerstone of overall health, and it supports kidney function by improving blood circulation and helping to manage blood pressure, which are both critical for kidney vitality. The World Health Organization (WHO) recommends at least 150 minutes of moderate-intensity aerobic activity per week for most adults. This doesn't necessarily mean high-impact exercise; simple activities like brisk walking, swimming, or cycling can be very beneficial. Furthermore, maintaining a healthy body weight is important, as excess weight can put additional strain on the kidneys and contribute to conditions like diabetes and high blood pressure, which are risk factors for kidney function decline. Prioritizing quality sleep, typically 7-9 hours per night for adults, also plays a role in body repair and hormonal regulation, indirectly supporting kidney health. Managing stress through practices like mindfulness, meditation, or hobbies can help control blood pressure fluctuations, which can affect kidney blood flow. Limiting exposure to certain environmental toxins and avoiding smoking are also crucial steps, as these habits can directly harm kidney cells and reduce filtering capacity. Making small, consistent changes in these areas can collectively contribute to maintaining or improving your eGFR 63 and supporting your kidneys.

Diet Changes for eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

When your eGFR (Estimated Glomerular Filtration Rate) is 63 mL/min/1.73m², making informed choices about your diet can be a powerful way to support your kidney health. While you might not need strict dietary restrictions, focusing on kidney-friendly eating patterns is highly beneficial. The Academy of Nutrition and Dietetics often recommends a balanced approach that emphasizes whole foods, fresh fruits, and vegetables, and limits processed items. It's about nurturing your kidneys by providing them with nutrients that don't overwhelm their filtering capacity. For instance, reducing your sodium intake is particularly important, as high sodium can contribute to high blood pressure, which in turn strains the kidneys. Similarly, being mindful of protein intake is advisable; while protein is essential, excessive amounts can make kidneys work harder. Discussing your dietary habits with a healthcare provider can help tailor recommendations specifically for your eGFR 63 and individual health profile. Small, consistent shifts in your eating habits can make a meaningful difference in maintaining kidney function and reducing the risk of further decline. Consider these dietary adjustments for an eGFR 63:

• **Reduce Sodium:** Limit processed foods, canned soups, and salty snacks, opting for fresh ingredients and seasoning with herbs and spices instead.
• **Moderate Protein:** Ensure adequate protein from lean sources like fish, poultry, beans, and lentils, but avoid very high-protein diets unless specifically advised by a doctor.
• **Stay Hydrated:** Drink enough water throughout the day, unless otherwise instructed by your doctor, as proper hydration supports kidney function.
• **Embrace Fruits and Vegetables:** Incorporate a variety of colorful fruits and vegetables into your meals for their antioxidants and fiber.

eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² in Men, Women, Elderly, and Kids

An eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² can have slightly different interpretations depending on factors like age, sex, and even ethnicity. For instance, in an older adult, an eGFR 63 might be more commonly observed due to the natural aging process, where kidney function can gradually decline. The Kidney Disease: Improving Global Outcomes (KDIGO) guidelines acknowledge that a mild reduction in eGFR might be more typical as people age. However, in a younger person, an eGFR 63 could be a more significant finding, prompting a deeper investigation into potential causes. Women tend to have a slightly lower average eGFR compared to men, partly due to differences in muscle mass, which influences creatinine levels used in the eGFR calculation. Therefore, an eGFR 63 in a woman might be viewed in a slightly different context than the same value in a man. Children have specific eGFR calculations based on height and age, and an eGFR 63 in a child would be a much more serious concern, as their kidneys are expected to function at a much higher rate. Ethnicity can also play a role in how eGFR is estimated, as certain equations adjust for racial differences in creatinine production. This complex interplay of demographics means that an eGFR 63 is not a one-size-fits-all number; its meaning is enriched by considering the individual's specific characteristics and broader health picture. Understanding these nuances helps healthcare providers give the most accurate assessment and appropriate recommendations for managing kidney health.

Medicine Effects on eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

Many medications can influence kidney function, and when your eGFR (Estimated Glomerular Filtration Rate) is 63 mL/min/1.73m², it becomes even more important to be aware of how different drugs might interact with your kidneys or require dosage adjustments. Your kidneys are responsible for filtering medications and their byproducts out of your body, and a mildly reduced eGFR 63 means this process might be a bit slower. Common over-the-counter pain relievers, known as NSAIDs (nonsteroidal anti-inflammatory drugs) like ibuprofen and naproxen, can potentially impact kidney function, especially with regular use. Similarly, certain blood pressure medications, while beneficial for overall cardiovascular health, may need careful monitoring or dosage adjustments when kidney function is at 63 mL/min/1.73m². It is crucial to always inform your healthcare provider about your eGFR value and all medications you are taking, including supplements and herbal remedies, to ensure they are kidney-safe. The National Institutes of Health (NIH) emphasizes the importance of medication review for individuals with any level of reduced kidney function to prevent complications. This proactive approach helps protect your kidneys from further strain and ensures the effectiveness and safety of your treatments. Some medications that might require extra attention for an eGFR 63 include:

• **NSAIDs:** Regular use of drugs like ibuprofen or naproxen can stress the kidneys and potentially worsen function.
• **Certain antibiotics:** Some antibiotics are primarily cleared by the kidneys and may need dose adjustments to prevent accumulation.
• **Specific diabetes medications:** Certain oral diabetes drugs may need careful monitoring or dosage changes to avoid kidney strain.

When to Retest eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

When your eGFR (Estimated Glomerular Filtration Rate) is 63 mL/min/1.73m², your healthcare provider will typically recommend a follow-up plan to monitor your kidney function over time. The specific timing of repeat testing often depends on other factors, such as your overall health, existing medical conditions like high blood pressure or diabetes, and any medications you are taking. For a value of 63, which represents a mild reduction, it is usually not an emergency that requires immediate retesting within days. Instead, your doctor might suggest repeating the eGFR measurement in a few months, perhaps within 3 to 6 months, to see if the value remains stable, improves, or shows a further decline. This allows time to implement any recommended lifestyle changes and assess their impact. The Mayo Clinic often advises that consistent monitoring is key for eGFR values in this range, providing a clearer picture of your kidney health trend rather than relying on a single snapshot. If there are other indicators of kidney damage, such as protein in your urine, or if you have conditions that significantly impact kidney health, your doctor might suggest more frequent monitoring. The goal of repeat testing for an eGFR 63 is to establish a pattern and ensure that any changes are identified early, allowing for proactive management and protective measures for your kidney vitality.

eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² — Frequently Asked Questions

When to See a Doctor About eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m²

Discovering an eGFR (Estimated Glomerular Filtration Rate) 63 mL/min/1.73m² on your blood test result is a valuable piece of information that warrants a conversation with your healthcare provider. It is important to schedule an appointment to discuss this specific finding, even if you are feeling perfectly fine. During this consultation, your doctor can review your complete medical history, assess any other health conditions you might have, and consider all your laboratory results together. This holistic view is crucial because an eGFR 63 could be influenced by various factors, some of which are manageable. Your doctor might recommend additional tests, such as a urine test for protein or a more detailed blood panel, to gain a deeper understanding of your kidney health. This is also an excellent opportunity to ask questions about how your lifestyle, diet, and current medications might be affecting your eGFR. Coming prepared with a list of your questions and any symptoms you've noticed, even if seemingly unrelated, can help facilitate a productive discussion about the best path forward for protecting your kidney function and overall well-being. This proactive step allows you to work collaboratively with your healthcare team to understand and manage your eGFR 63.