eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²: Is That High?

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) 23 mL/min/1.73m² Low, Normal, or High?

eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m² is a value that might be considered significantly lower than what is typically seen in healthy adults. A higher eGFR generally points to more robust kidney function, while this specific measurement suggests your kidneys are not filtering waste as efficiently as they should. Understanding this number is an important step, and it is crucial to discuss this particular result with your healthcare provider to fully grasp its implications for your well-being. This value often signals a need for focused attention and a clear plan of action.

Hidden Risk of eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

Understanding an eGFR of 23 mL/min/1.73m² goes beyond just a number; it highlights the body's diminished capacity to purify the blood, which carries various potential health considerations if not properly managed. While the kidneys work tirelessly, when their filtering capacity is significantly reduced to this level, toxins and excess fluids can build up, potentially influencing other vital body systems. This emphasizes the importance of a comprehensive health review with your doctor, as conditions like elevated blood pressure, anemia (a shortage of healthy red blood cells), and even bone health issues can become more prominent when kidney function is at this specific level, according to organizations like the National Kidney Foundation (NKF). Proactive management and ongoing dialogue with your healthcare team are key to addressing these potential challenges and maintaining your overall health trajectory.

• Accumulation of waste products in the blood.
• Potential impact on heart and bone health.

What Does a eGFR (Estimated Glomerular Filtration Rate) Level of 23 mL/min/1.73m² Mean?

The eGFR, or Estimated Glomerular Filtration Rate, is a measure that helps your doctor understand how well your kidneys are filtering waste from your blood. Imagine your kidneys as sophisticated water filters, constantly working to clean your body's internal environment. A value like eGFR 23 mL/min/1.73m² means that these filters are working at only about 23% of the efficiency of a perfectly healthy average adult's kidneys. This significantly reduced filtering capacity suggests that your kidneys are having a harder time removing toxins and excess fluid from your system. When you discuss this specific number with your doctor, they will consider it alongside your full health profile, including any symptoms you might be experiencing, your medical history, and other test results. The goal of this discussion is to gain a clear picture of your kidney health and to explore what might be contributing to this finding. It's an opportunity to collaborate on a plan to support your kidneys and manage any related health concerns effectively, ensuring you feel empowered and informed about your next steps.

Lifestyle Changes for eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

When your eGFR is 23 mL/min/1.73m², focusing on certain lifestyle adjustments, beyond just what you eat, becomes a significant part of supporting your kidney health and overall well-being. Regular, moderate physical activity, tailored to your individual capabilities, is often encouraged; simple activities like walking can contribute positively to cardiovascular health, which is closely linked to kidney function. Managing stress through techniques such as mindfulness, deep breathing, or hobbies can also be beneficial, as chronic stress can have systemic effects on the body. It's also important to avoid habits that place additional strain on your kidneys, such as smoking or excessive alcohol consumption. Ensuring you get adequate, restful sleep each night is another foundational aspect of general health that can indirectly support organ function. Always discuss any proposed changes to your exercise routine or other lifestyle habits with your healthcare provider to ensure they are appropriate for your specific health situation, especially when managing an eGFR of 23 mL/min/1.73m². Your doctor can help you find safe and effective ways to incorporate these changes into your daily life.

Diet Changes for eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

When your eGFR measures 23 mL/min/1.73m², dietary modifications often play a central role in helping to manage kidney health and reduce the burden on these vital organs. Your doctor or a registered dietitian specializing in kidney care will likely recommend a personalized nutrition plan. This typically involves paying close attention to your intake of sodium (salt) to help manage blood pressure and fluid balance. You might also be advised to monitor phosphorus and potassium levels, as kidneys with reduced function may struggle to remove these minerals effectively from your blood, potentially leading to imbalances. Protein intake may also need careful consideration, as consuming too much protein can create more waste products for the kidneys to filter. Organizations like the Kidney Disease: Improving Global Outcomes (KDIGO) provide guidelines that underpin these types of dietary recommendations. It is essential that any dietary adjustments are made under the guidance of healthcare professionals who can tailor advice to your unique needs, helping you make informed food choices.

• Manage sodium intake to help control blood pressure.
• Monitor phosphorus and potassium levels under guidance.

eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m² in Men, Women, Elderly, and Kids

The eGFR calculation inherently takes into account factors such as age, sex, and race when estimating kidney function. This means that an eGFR value of 23 mL/min/1.73m² already reflects these demographic differences to some extent. For instance, what might be considered a typical eGFR in an older adult is generally lower than in a young, healthy individual. However, regardless of these demographic variables, an eGFR of 23 mL/min/1.73m² still represents a significant reduction in kidney function across all groups. While the underlying causes might vary – perhaps long-standing conditions in older adults, or specific conditions in younger individuals – the message from this number is consistently one of concern. Your doctor will consider your specific age, sex, and ethnic background when interpreting this result, not to change the number itself, but to understand its full clinical context within your unique health story. It is important to remember that this specific low value signifies that close monitoring and management are necessary, irrespective of how the initial calculation adjusted for these factors.

Medicine Effects on eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

When your eGFR is 23 mL/min/1.73m², the way your body processes and eliminates medications can be significantly altered, making it a critical point of discussion with your healthcare provider. Kidneys play a major role in clearing many drugs from the bloodstream, and with reduced function at this level, medications can build up, potentially leading to increased side effects or toxicity. Therefore, your doctor will carefully review all your current prescriptions, over-the-counter drugs, and supplements. They may need to adjust dosages, switch certain medications, or even discontinue some that could further impact kidney function or are no longer safe at this eGFR level. This thorough review is crucial for your safety and to ensure that treatments remain effective without posing undue risks. The Centers for Disease Control and Prevention (CDC) often emphasizes the importance of medication reconciliation in individuals with reduced kidney function to prevent complications. Always inform your doctor about everything you are taking, even if you consider it harmless.

• Medication dosages may need adjustment.
• Certain drugs might require careful monitoring or discontinuation.

When to Retest eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

When you have an eGFR of 23 mL/min/1.73m², repeating the test is a common and important step in managing your kidney health. Your doctor will determine the appropriate frequency for follow-up tests, and this often depends on several factors: whether this is a new finding, if you have other underlying health conditions, and what management plan is put into place. Repeating the test helps your healthcare team track trends, see if your kidney function is stable, declining, or, in some cases, showing signs of improvement with intervention. It allows them to assess the effectiveness of any lifestyle changes, dietary modifications, or medications you've started. This continuous monitoring is a cornerstone of managing kidney health at this specific level. It provides valuable information to guide ongoing discussions and adjustments to your care plan, ensuring that decisions are always based on the most current picture of your kidney's performance. The frequency of these repeat tests is a personalized decision made in close consultation with your doctor.

eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m² — Frequently Asked Questions

When to See a Doctor About eGFR (Estimated Glomerular Filtration Rate) 23 mL/min/1.73m²

With an eGFR (Estimated Glomerular Filtration Rate) of 23 mL/min/1.73m², regular communication with your healthcare provider is paramount. This specific number places you in a category where careful monitoring and proactive management are crucial. You should consistently follow your doctor's recommended schedule for appointments and follow-up tests, as these visits are essential for tracking your kidney function and adjusting your care plan as needed. Beyond scheduled appointments, it is vital to contact your doctor if you experience any new or worsening symptoms that might be related to your kidney health. This includes significant changes in urination patterns, swelling in your legs or ankles, persistent fatigue, unexplained shortness of breath, or any new discomfort. Promptly reporting these observations allows your healthcare team to assess your condition quickly and make timely interventions, ensuring that your health remains a top priority and that you receive the continuous support necessary for managing your eGFR of 23 mL/min/1.73m².