Early detection and proper management of chronic kidney disease are crucial in slowing the progression of the disease and preventing complications. Understanding the 5 stages of chronic kidney disease can help individuals seek timely treatment and make informed lifestyle changes. If you or a loved one has been diagnosed with CKD, consulting an experienced kidney or renal specialist can provide expert care and improve long-term outcomes.
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What Is Chronic Kidney Disease?
Chronic kidney disease occurs when the kidneys gradually lose their ability to filter waste and excess fluids from the blood. This can lead to toxin build-up, high blood pressure, and other serious health issues. The disease progresses through five stages, classified based on kidney function measured by the glomerular filtration rate (GFR). The GFR shows how well the kidneys are filtering waste and excess fluids.
Measured vs. Estimating GFR
Measuring GFR is important as CKD often does not have any symptoms until the later stages of the disease. However, getting measured GFR (mGFR) is a complicated. Healthcare professionals instead use a formula to estimate GFR. This is done with a simple blood test that measures creatinine levels in the blood. Creatinine is a waste product produced by the digestion of dietary protein and the normal breakdown of muscle tissue.
Learn More: Screening For Chronic Kidney Disease In Singapore
The 5 Stages Of Chronic Kidney Disease
If your blood test measures your GFR at 90 or above (Stage 1), this indicates that your kidney is functioning normally. You either have no kidney disease, or, your kidney disease has not caused any damage that affects the normal functioning of the kidneys. Here is what you should know about the 5 stages of CKD:
Stage 1: Kidney Damage With Normal Function (GFR ≥ 90 ml/min)
At this stage, the kidneys are still functioning normally, but early signs of damage may be present. Many people do not experience symptoms, making early detection challenging.
Signs And Risk Factors:
- High blood pressure
- Diabetes
- Protein in urine (early marker of kidney damage)
What To Do:
- Regular health screenings, especially for high-risk individuals (e.g., those with diabetes or hypertension).
- Maintain a healthy diet and lifestyle to prevent further damage.
Stage 2: Mild Reduction In Kidney Function (GFR 60-89 ml/min)
In Stage 2, kidney function begins to decline slightly, but symptoms are still not prominent. This stage is often detected through routine blood and urine tests rather than noticeable health changes.
Signs And Risk Factors:
- Mild protein leakage in urine
- Increased blood pressure
- Early structural changes in the kidneys
What To Do:
- Monitor kidney function regularly with blood tests.
- Work with a kidney specialist to manage risk factors.
- Control blood sugar and blood pressure through diet and medication.
Stage 3: Moderate Reduction In Kidney Function (GFR 30-59 ml/min)
At Stage 3, kidney function is moderately impaired, and symptoms may begin to appear. This is a critical stage for intervention to slow progression and avoid complications.
Signs And Symptoms:
- Fatigue and weakness
- Swelling in hands and feet (fluid retention)
- Increased urination at night
- Back pain near the kidneys
What To Do:
- See a kidney specialist in Singapore for tailored treatment.
- Follow a kidney-friendly diet (low sodium, controlled protein intake).
- Manage blood pressure and cholesterol levels with lifestyle changes and medication.
Stage 4: Severe Reduction In Kidney Function (GFR 15-29 ml/min)
At Stage 4, kidney function is severely compromised, and symptoms become more noticeable. Patients at this stage need close medical supervision to prepare for possible dialysis or kidney transplant.
Signs And Symptoms:
- Severe fatigue and shortness of breath
- Loss of appetite and nausea
- Bone pain and muscle cramps
- Swelling in the lower body
What To Do:
- Consult a kidney specialist to explore treatment options.
- Start planning for dialysis or transplant if kidney function continues to decline.
- Adopt a strict low-protein, low-salt diet to reduce kidney strain.
Stage 5: Kidney Failure (End-Stage Renal Disease) (GFR < 15 ml/min)
Stage 5 CKD is also known as end-stage renal disease (ESRD), where the kidneys can no longer function adequately to sustain life without medical intervention.
Signs And Symptoms:
- Severe swelling and fluid retention
- Uncontrolled high blood pressure
- Itchy skin and confusion due to toxin build-up
- Need for immediate dialysis or kidney transplant
What To Do:
- Immediate consultation with a kidney specialist is critical.
- Begin dialysis (haemodialysis or peritoneal dialysis) if necessary.
- Consider a kidney transplant as a long-term solution.
The table below outlines the five stages of CKD, including their GFR levels, symptoms, and recommended actions:
| Stage | GFR Level (ml/min) | Recommended Actions |
|---|---|---|
| Stage 1 | ≥ 90 (Normal function but with kidney damage) | Regular health screenings, manage risk factors (diabetes, hypertension) |
| Stage 2 | 60-89 (Mild kidney function decline) | Monitor kidney function, maintain a healthy diet, control blood sugar and blood pressure |
| Stage 3 | 30-59 (Moderate kidney function decline) | Consult a kidney specialist, adopt a kidney-friendly diet, manage cholesterol and blood pressure |
| Stage 4 | 15-29 (Severe kidney function decline) | Close monitoring by a kidney specialist, prepare for dialysis or transplant |
| Stage 5 | < 15 (End-stage kidney disease) | Immediate medical intervention, start dialysis or consider kidney transplant |
Why Early Detection And Specialist Care Matter
In Singapore, chronic kidney disease is a leading cause of hospitalisation, with many cases progressing to end-stage kidney failure due to late diagnosis. Regular screenings, lifestyle changes, and early intervention can slow or prevent progression to advanced stages.
Consulting an experienced kidney or renal specialist ensures that patients receive:
- Personalised treatment plans to manage CKD effectively.
- Expert guidance on lifestyle and dietary changes to protect kidney function.
- Access to the latest medical advancements in kidney care.
Book A Consultation With A Kidney Or Renal Specialist
If you have been diagnosed with CKD or are at risk, do not wait until symptoms worsen. Early consultation with a kidney or renal specialist can make a significant difference in preserving your kidney function and overall health.
If you are looking to consult a kidney or renal specialist, you can consider our Preferred Doctors for kidney health:
Health365 Preferred Doctors
If you are looking for a kidney specialist in Singapore, you can consider our Preferred Doctors:
- Dr Wong Weng Kin is a highly qualified renal physician who combines deep expertise in complex kidney conditions with advanced skills in diagnostic and interventional nephrology, dialysis, and critical care. He offers holistic, personalised treatment that uses the latest research, technology, and precision medicine to protect long-term kidney health and overall well-being.
[SG] Featured Doctor- Dr Kevin Koo
Take control of your kidney health today. Contact us to schedule a consultation with a kidney or renal specialist and get expert care tailored to your needs.
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