Understanding Chronic Kidney Disease Stages: What Each Stage Means for You
Chronic kidney disease (CKD) is a long-term condition where your kidneys gradually lose the ability to filter waste and excess fluid from your blood. This guide breaks down the 5 stages of CKD, their symptoms, and how to manage the condition at every step.
CKD is staged by your estimated glomerular filtration rate (eGFR), a measure of how well your kidneys filter blood. Early stages often have no symptoms, but managing underlying conditions like diabetes and high blood pressure can slow or stop progression. Later stages may require dialysis or a kidney transplant to survive.
Overview
Chronic kidney disease (CKD) is a long-term condition where your kidneys are damaged and cannot filter blood as well as they should. The disease is grouped into 5 stages based on your estimated glomerular filtration rate (eGFR), a measure of how many milliliters of waste your kidneys can filter per minute. Stage 1 is the mildest form, with normal or near-normal kidney function, while Stage 5 (also called end-stage renal disease, or ESRD) means your kidneys have almost completely stopped working.
Signs & Symptoms
In the early stages of CKD (Stages 1–3), most people have no symptoms at all, because the kidneys can still filter enough waste to keep you healthy. Symptoms usually only appear when kidney function has dropped significantly, in later stages.
- Fatigue and weakness
- Swelling in your legs, ankles, feet, or face (from fluid buildup)
- Frequent urination, especially at night
- Blood or protein in your urine (which may make your urine look foamy or dark)
- Persistent itchy skin
- Nausea, vomiting, or loss of appetite
- Shortness of breath (from fluid buildup in the lungs or anemia)
- Confusion or trouble concentrating
Causes & Risk Factors
The two most common causes of CKD are diabetes and high blood pressure (hypertension). Over time, high blood sugar from diabetes damages the tiny filters in your kidneys, while high blood pressure harms the blood vessels that supply your kidneys with oxygen and nutrients. Other causes include glomerulonephritis (inflammation of the kidney’s filtering units), polycystic kidney disease (a genetic condition that causes cysts to form in the kidneys), long-term blockages in the urinary tract, and prolonged use of certain medications like nonsteroidal anti-inflammatory drugs (NSAIDs, e.g., ibuprofen, naproxen).
- Family history of kidney disease
- Age over 60
- History of heart disease
- Obesity
- Smoking
- Being Black, Indigenous, Hispanic, or Asian American (these groups have higher rates of CKD due to systemic health disparities)
Diagnosis
CKD is diagnosed with simple blood and urine tests. Your healthcare provider will calculate your eGFR using a blood test that measures creatinine, a waste product produced by your muscles, along with your age and sex. A urine test will check for albumin, a type of protein that leaks into urine when the kidneys are damaged. You may also get an ultrasound or other imaging test to check the size and structure of your kidneys.
| CKD Stage | eGFR Range (mL/min/1.73m²) | What It Means |
|---|---|---|
| Stage 1 | 90 or higher | Normal or high kidney function, with clear evidence of kidney damage (e.g., persistent protein in urine) |
| Stage 2 | 60–89 | Mild decrease in kidney function, with evidence of kidney damage |
| Stage 3a | 45–59 | Moderate decrease in kidney function |
| Stage 3b | 30–44 | Moderate to severe decrease in kidney function |
| Stage 4 | 15–29 | Severe decrease in kidney function, close to kidney failure |
| Stage 5 | Less than 15 | Kidney failure (end-stage renal disease, ESRD); dialysis or kidney transplant is required to survive |
Treatment & Management
There is no cure for CKD, but treatment can slow or stop its progression, manage symptoms, and prevent complications like heart disease. Treatment plans are tailored to your stage of CKD and underlying causes. For early stages, the focus is on controlling the root cause: keeping blood sugar in range if you have diabetes, and lowering high blood pressure to protect your kidneys. Medications called ACE inhibitors or angiotensin receptor blockers (ARBs) are often prescribed to reduce kidney damage and protein in urine. For Stage 4 or 5 CKD, treatment may include dialysis (a process that filters waste and excess fluid from your blood when your kidneys can’t) or a kidney transplant.
Always talk to your healthcare provider before taking any new medication, including over-the-counter pain relievers, supplements, or herbal remedies. Regular use of NSAIDs like ibuprofen and naproxen can cause permanent kidney damage in people with CKD.
Living With CKD
With the right care and lifestyle changes, many people with early-stage CKD live full, active lives for decades. Working with a care team that includes a nephrologist (kidney specialist), primary care provider, and renal dietitian can help you create a personalized plan to manage your condition.
- Follow a kidney-friendly diet as advised by your dietitian: this often means limiting sodium, processed foods, and excess protein, and controlling your intake of potassium and phosphorus if your provider recommends it.
- Stay physically active with gentle, regular exercise like walking or swimming, as tolerated.
- Avoid smoking and limit alcohol consumption, as both can worsen kidney damage.
- Monitor your blood pressure and blood sugar regularly if you have hypertension or diabetes, and take all prescribed medications as directed.
- Attend all scheduled nephrology appointments and lab tests to track your kidney function over time.
Medical Review Team
WellAlly Medical Editorial Team
This content is not a replacement for professional medical advice.
Recovery & management timeline
Varies; may last years or decades without progression
Early CKD (Stages 1–2)
Work with your provider to manage underlying conditions like diabetes or high blood pressure, make healthy lifestyle changes, and get regular eGFR and urine tests to monitor kidney function.
Varies; may take 5–20 years to progress to the next stage without intervention
Moderate CKD (Stages 3a–3b)
Continue managing underlying conditions, follow a kidney-friendly diet, take prescribed kidney-protective medications, and monitor for symptoms like swelling or fatigue.
Typically 1–5 years before progression to kidney failure without treatment
Severe CKD (Stage 4)
See a nephrologist regularly, discuss preparation for dialysis or transplant if needed, adjust your diet to limit phosphorus, potassium, and sodium, and monitor for complications like anemia or bone disease.
Ongoing, lifelong without dialysis or transplant
Kidney Failure (Stage 5/ESRD)
Start dialysis (hemodialysis or peritoneal dialysis) as prescribed, or receive a kidney transplant, follow strict dietary and medication guidelines, and attend all regular medical appointments.
Self-care steps
1Manage underlying health conditions
If you have diabetes, keep your blood sugar in the target range set by your provider. If you have high blood pressure, aim for the blood pressure goal your provider recommends (usually below 130/80 mmHg for people with CKD) to reduce strain on your kidneys.
2Follow a kidney-friendly eating plan
Work with a renal dietitian to create a meal plan that limits sodium, processed foods, and excess animal protein, and controls your intake of potassium and phosphorus if needed. Avoid processed meats, canned soups, and fast food, which are high in sodium.
3Stay active and maintain a healthy weight
Aim for at least 150 minutes of moderate exercise per week, like walking, swimming, or cycling, as tolerated. Losing even 5–10% of your body weight if you are overweight can slow CKD progression.
4Avoid kidney-damaging substances
Limit over-the-counter NSAID pain relievers like ibuprofen and naproxen, and avoid smoking and excessive alcohol use. Always check with your provider before taking any new supplements, vitamins, or herbal products.
5Track your kidney health regularly
Attend all scheduled lab tests to check your eGFR, urine albumin, and other markers of kidney function. Keep a log of your blood pressure, blood sugar (if applicable), and any symptoms you experience to share with your care team.
When to seek medical help
Seek emergency medical care immediately if you experience any of the following: sudden severe swelling in your legs, lungs, or face; difficulty breathing; chest pain; confusion or loss of consciousness; decreased or no urine output; or severe, uncontrolled nausea and vomiting. These can be signs of severe kidney damage or life-threatening complications.
Frequently asked questions
Can CKD be cured?
What is eGFR, and why is it important?
Do I need to change my diet if I have CKD?
What is the difference between Stage 3a and 3b CKD?
Sources
- 1
- 2Mayo ClinicSource
- 3
- 4
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Medical Editorial Team · Last reviewed October 9, 2026. · Read our editorial policy